4645642680 has 128 divisors (see below), whose sum is σ = 17697715200. Its totient is φ = 1061859456.

The previous prime is 4645642679. The next prime is 4645642691. The reversal of 4645642680 is 862465464.

4645642680 is a `hidden beast` number, since 4 + 6 + 4 + 564 + 2 + 6 + 80 = 666.

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

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, 299692 + ... + 314811.

It is an arithmetic number, because the mean of its divisors is an integer number (138263400).

Almost surely, 2^4645642680 is an apocalyptic number.

4645642680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4645642680 is an abundant number, since it is smaller than the sum of its proper divisors (13052072520).

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

4645642680 is a wasteful number, since it uses less digits than its factorization.

4645642680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614530 (or 614520 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 45.

The square root of 4645642680 is about 68158.9515764437. The cubic root of 4645642680 is about 1668.5860215088.

The spelling of 4645642680 in words is "four billion, six hundred forty-five million, six hundred forty-two thousand, six hundred eighty".