74634820 has 24 divisors (see below), whose sum is σ = 168790104. Its totient is φ = 27557376.

The previous prime is 74634787. The next prime is 74634853. The reversal of 74634820 is 2843647.

It is an interprime number because it is at equal distance from previous prime (74634787) and next prime (74634853).

It can be written as a sum of positive squares in 4 ways, for example, as 295936 + 74338884 = 544^2 + 8622^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143269 + ... + 143788.

It is an arithmetic number, because the mean of its divisors is an integer number (7032921).

Almost surely, 2^74634820 is an apocalyptic number.

It is an amenable number.

74634820 is an abundant number, since it is smaller than the sum of its proper divisors (94155284).

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

74634820 is a wasteful number, since it uses less digits than its factorization.

74634820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287079 (or 287077 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 74634820 is about 8639.1446335850. The cubic root of 74634820 is about 421.0307637711.

The spelling of 74634820 in words is "seventy-four million, six hundred thirty-four thousand, eight hundred twenty".