74961656 has 64 divisors (see below), whose sum is σ = 177742080. Its totient is φ = 28788480.

The previous prime is 74961629. The next prime is 74961659. The reversal of 74961656 is 65616947.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74961659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44135 + ... + 45801.

It is an arithmetic number, because the mean of its divisors is an integer number (2777220).

Almost surely, 2^74961656 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 74961656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88871040).

74961656 is an abundant number, since it is smaller than the sum of its proper divisors (102780424).

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

74961656 is a wasteful number, since it uses less digits than its factorization.

74961656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764 (or 1760 counting only the distinct ones).

The product of its digits is 272160, while the sum is 44.

The square root of 74961656 is about 8658.0399629477. The cubic root of 74961656 is about 421.6444524396.

The spelling of 74961656 in words is "seventy-four million, nine hundred sixty-one thousand, six hundred fifty-six".