74785878 has 24 divisors (see below), whose sum is σ = 164694816. Its totient is φ = 24519600.

The previous prime is 74785877. The next prime is 74785897. The reversal of 74785878 is 87858747.

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 (74785871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32958 + ... + 35153.

It is an arithmetic number, because the mean of its divisors is an integer number (6862284).

Almost surely, 2^74785878 is an apocalyptic number.

74785878 is an abundant number, since it is smaller than the sum of its proper divisors (89908938).

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

74785878 is a wasteful number, since it uses less digits than its factorization.

74785878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68180 (or 68177 counting only the distinct ones).

The product of its digits is 3512320, while the sum is 54.

The square root of 74785878 is about 8647.8828622964. The cubic root of 74785878 is about 421.3146223654.

The spelling of 74785878 in words is "seventy-four million, seven hundred eighty-five thousand, eight hundred seventy-eight".