2667170640 has 80 divisors (see below), whose sum is σ = 8341483968. Its totient is φ = 704944128.

The previous prime is 2667170599. The next prime is 2667170669. The reversal of 2667170640 is 460717662.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×2667170640² = 14227598445756019200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22054 + ... + 76293.

Almost surely, 2^2667170640 is an apocalyptic number.

2667170640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2667170640 is an abundant number, since it is smaller than the sum of its proper divisors (5674313328).

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

2667170640 is a wasteful number, since it uses less digits than its factorization.

2667170640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98476 (or 98470 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 2667170640 is about 51644.6574197177. The cubic root of 2667170640 is about 1386.8099020967.

The spelling of 2667170640 in words is "two billion, six hundred sixty-seven million, one hundred seventy thousand, six hundred forty".