74611840 has 64 divisors (see below), whose sum is σ = 180925560. Its totient is φ = 29417472.

The previous prime is 74611829. The next prime is 74611877. The reversal of 74611840 is 4811647.

It can be written as a sum of positive squares in 4 ways, for example, as 51494976 + 23116864 = 7176^2 + 4808^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable 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 7 ways as a sum of consecutive naturals, for example, 45922 + ... + 47518.

Almost surely, 2^74611840 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 74611840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90462780).

74611840 is an abundant number, since it is smaller than the sum of its proper divisors (106313720).

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

74611840 is a wasteful number, since it uses less digits than its factorization.

74611840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1689 (or 1677 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 74611840 is about 8637.8145384119. The cubic root of 74611840 is about 420.9875476595.

The spelling of 74611840 in words is "seventy-four million, six hundred eleven thousand, eight hundred forty".