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670624 = 25191103
BaseRepresentation
bin10100011101110100000
31021001220221
42203232200
5132424444
622212424
75462113
oct2435640
91231827
10670624
11418939
12284114
131a6326
1413657a
15d3a84
hexa3ba0

670624 has 24 divisors (see below), whose sum is σ = 1391040. Its totient is φ = 317376.

The previous prime is 670619. The next prime is 670627. The reversal of 670624 is 426076.

It is a Smith number, since the sum of its digits (25) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (670627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57 + ... + 1159.

It is an arithmetic number, because the mean of its divisors is an integer number (57960).

2670624 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695520).

670624 is an abundant number, since it is smaller than the sum of its proper divisors (720416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670624 is a wasteful number, since it uses less digits than its factorization.

670624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1124 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 670624 is about 818.9163571452. The cubic root of 670624 is about 87.5305580343.

The spelling of 670624 in words is "six hundred seventy thousand, six hundred twenty-four".

Divisors: 1 2 4 8 16 19 32 38 76 152 304 608 1103 2206 4412 8824 17648 20957 35296 41914 83828 167656 335312 670624