74781696 has 88 divisors (see below), whose sum is σ = 217538784. Its totient is φ = 22650880.

The previous prime is 74781689. The next prime is 74781697. The reversal of 74781696 is 69618747.

It is a tau number, because it is divible by the number of its divisors (88).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 (74781697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32686 + ... + 34898.

Almost surely, 2^74781696 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 74781696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108769392).

74781696 is an abundant number, since it is smaller than the sum of its proper divisors (142757088).

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

74781696 is a wasteful number, since it uses less digits than its factorization.

74781696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2247 (or 2229 counting only the distinct ones).

The product of its digits is 508032, while the sum is 48.

The square root of 74781696 is about 8647.6410656317. The cubic root of 74781696 is about 421.3067689638.

The spelling of 74781696 in words is "seventy-four million, seven hundred eighty-one thousand, six hundred ninety-six".