6475398645 has 32 divisors (see below), whose sum is σ = 10916352000. Its totient is φ = 3268655424.

The previous prime is 6475398619. The next prime is 6475398659. The reversal of 6475398645 is 5468935746.

It is not a de Polignac number, because 6475398645 - 2¹⁵ = 6475365877 is a prime.

It is a super-2 number, since 2×6475398645² = 83861575223335672050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 304056 + ... + 324654.

It is an arithmetic number, because the mean of its divisors is an integer number (341136000).

Almost surely, 2^6475398645 is an apocalyptic number.

It is an amenable number.

6475398645 is a deficient number, since it is larger than the sum of its proper divisors (4440953355).

6475398645 is a wasteful number, since it uses less digits than its factorization.

6475398645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21729.

The product of its digits is 21772800, while the sum is 57.

The square root of 6475398645 is about 80469.8617185341. The cubic root of 6475398645 is about 1863.8981188406.

The spelling of 6475398645 in words is "six billion, four hundred seventy-five million, three hundred ninety-eight thousand, six hundred forty-five".