974361645 has 24 divisors (see below), whose sum is σ = 1705623192. Its totient is φ = 514512000.

The previous prime is 974361623. The next prime is 974361649. The reversal of 974361645 is 546163479.

It can be written as a sum of positive squares in 4 ways, for example, as 472019076 + 502342569 = 21726^2 + 22413^2 .

It is not a de Polignac number, because 974361645 - 2⁸ = 974361389 is a prime.

It is a super-3 number, since 3×974361645³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 974361645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (974361649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102646 + ... + 111735.

It is an arithmetic number, because the mean of its divisors is an integer number (71067633).

Almost surely, 2^974361645 is an apocalyptic number.

It is an amenable number.

974361645 is a deficient number, since it is larger than the sum of its proper divisors (731261547).

974361645 is a wasteful number, since it uses less digits than its factorization.

974361645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214493 (or 214490 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 974361645 is about 31214.7664575598. The cubic root of 974361645 is about 991.3797871136.

The spelling of 974361645 in words is "nine hundred seventy-four million, three hundred sixty-one thousand, six hundred forty-five".