747630 has 80 divisors (see below), whose sum is σ = 2195424. Its totient is φ = 181440.

The previous prime is 747619. The next prime is 747647. The reversal of 747630 is 36747.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 747594 and 747603.

It is a congruent number.

It is an unprimeable number.

747630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 10495 + ... + 10565.

2⁷⁴⁷⁶³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 747630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1097712).

747630 is an abundant number, since it is smaller than the sum of its proper divisors (1447794).

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

747630 is a wasteful number, since it uses less digits than its factorization.

747630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 747630 is about 864.6560009622. The cubic root of 747630 is about 90.7602269739.

The spelling of 747630 in words is "seven hundred forty-seven thousand, six hundred thirty".