74677646 has 16 divisors (see below), whose sum is σ = 115069248. Its totient is φ = 36326400.

The previous prime is 74677637. The next prime is 74677649. The reversal of 74677646 is 64677647.

It is a self number, because there is not a number n which added to its sum of digits gives 74677646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74677649) 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, 34286 + ... + 36398.

It is an arithmetic number, because the mean of its divisors is an integer number (7191828).

Almost surely, 2^74677646 is an apocalyptic number.

74677646 is a deficient number, since it is larger than the sum of its proper divisors (40391602).

74677646 is a wasteful number, since it uses less digits than its factorization.

74677646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587.

The product of its digits is 1185408, while the sum is 47.

The square root of 74677646 is about 8641.6228799919. The cubic root of 74677646 is about 421.1112785398. Note that the first 3 decimals are identical.

Subtracting from 74677646 its reverse (64677647), we obtain a palindrome (9999999).

The spelling of 74677646 in words is "seventy-four million, six hundred seventy-seven thousand, six hundred forty-six".