974206640 has 40 divisors (see below), whose sum is σ = 2470944528. Its totient is φ = 354256640.

The previous prime is 974206613. The next prime is 974206669. The reversal of 974206640 is 46602479.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 974206594 and 974206603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552647 + ... + 554406.

Almost surely, 2^974206640 is an apocalyptic number.

It is an amenable number.

974206640 is an abundant number, since it is smaller than the sum of its proper divisors (1496737888).

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

974206640 is a wasteful number, since it uses less digits than its factorization.

974206640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107077 (or 1107071 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 974206640 is about 31212.2834794252. The cubic root of 974206640 is about 991.3272135563.

The spelling of 974206640 in words is "nine hundred seventy-four million, two hundred six thousand, six hundred forty".