645152634662 has 8 divisors (see below), whose sum is σ = 984131137800. Its totient is φ = 317108922064.

The previous prime is 645152634611. The next prime is 645152634671. The reversal of 645152634662 is 266436251546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×645152634662² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 645152634662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2733697487 + ... + 2733697722.

It is an arithmetic number, because the mean of its divisors is an integer number (123016392225).

Almost surely, 2^645152634662 is an apocalyptic number.

645152634662 is a deficient number, since it is larger than the sum of its proper divisors (338978503138).

645152634662 is a wasteful number, since it uses less digits than its factorization.

645152634662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5467395270.

The product of its digits is 6220800, while the sum is 50.

The spelling of 645152634662 in words is "six hundred forty-five billion, one hundred fifty-two million, six hundred thirty-four thousand, six hundred sixty-two".