61672710 has 64 divisors (see below), whose sum is σ = 165867264. Its totient is φ = 14544000.

The previous prime is 61672703. The next prime is 61672717. The reversal of 61672710 is 1727616.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61672703) and next prime (61672717).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61672717) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9685 + ... + 14735.

It is an arithmetic number, because the mean of its divisors is an integer number (2591676).

Almost surely, 2^61672710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61672710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82933632).

61672710 is an abundant number, since it is smaller than the sum of its proper divisors (104194554).

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

61672710 is a wasteful number, since it uses less digits than its factorization.

61672710 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 61672710 is about 7853.1974379866. The cubic root of 61672710 is about 395.0914919188.

The spelling of 61672710 in words is "sixty-one million, six hundred seventy-two thousand, seven hundred ten".