2642307864 has 64 divisors (see below), whose sum is σ = 7624247040. Its totient is φ = 747465600.

The previous prime is 2642307821. The next prime is 2642307869. The reversal of 2642307864 is 4687032462.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2642307869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60894 + ... + 94829.

It is an arithmetic number, because the mean of its divisors is an integer number (119128860).

Almost surely, 2^2642307864 is an apocalyptic number.

2642307864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2642307864 is an abundant number, since it is smaller than the sum of its proper divisors (4981939176).

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

2642307864 is a wasteful number, since it uses less digits than its factorization.

2642307864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155840 (or 155836 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The square root of 2642307864 is about 51403.3837796696. The cubic root of 2642307864 is about 1382.4872639811.

The spelling of 2642307864 in words is "two billion, six hundred forty-two million, three hundred seven thousand, eight hundred sixty-four".