674465352767440 has 80 divisors (see below), whose sum is σ = 1690988336725968. Its totient is φ = 248704386674688.

The previous prime is 674465352767431. The next prime is 674465352767489. The reversal of 674465352767440 is 44767253564476.

It can be written as a sum of positive squares in 8 ways, for example, as 81433370113936 + 593031982653504 = 9024044^2 + 24352248^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 674465352767440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427564357 + ... + 429138916.

Almost surely, 2^{674465352767440} is an apocalyptic number.

It is an amenable number.

674465352767440 is an abundant number, since it is smaller than the sum of its proper divisors (1016522983958528).

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

674465352767440 is a wasteful number, since it uses less digits than its factorization.

674465352767440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856704056 (or 856704050 counting only the distinct ones).

The product of its (nonzero) digits is 2844979200, while the sum is 70.

The spelling of 674465352767440 in words is "six hundred seventy-four trillion, four hundred sixty-five billion, three hundred fifty-two million, seven hundred sixty-seven thousand, four hundred forty".