6503674957 has 6 divisors (see below), whose sum is σ = 7004270798. Its totient is φ = 6003123864.

The previous prime is 6503674943. The next prime is 6503674973. The reversal of 6503674957 is 7594763056.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4502544201 + 2001130756 = 67101^2 + 44734^2 .

It is not a de Polignac number, because 6503674957 - 2⁷ = 6503674829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6503674927) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279588 + ... + 301954.

Almost surely, 2^6503674957 is an apocalyptic number.

It is an amenable number.

6503674957 is a deficient number, since it is larger than the sum of its proper divisors (500595841).

6503674957 is an frugal number, since it uses more digits than its factorization.

6503674957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44747 (or 22380 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 52.

The square root of 6503674957 is about 80645.3653783030. The cubic root of 6503674957 is about 1866.6072254279.

Multiplying 6503674957 by its sum of digits (52), we get a square (338191097764 = 581542²).

The spelling of 6503674957 in words is "six billion, five hundred three million, six hundred seventy-four thousand, nine hundred fifty-seven".