2667557620 has 48 divisors (see below), whose sum is σ = 6894615168. Its totient is φ = 844237440.

The previous prime is 2667557609. The next prime is 2667557623. The reversal of 2667557620 is 267557662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2667557623) 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, 731026 + ... + 734665.

It is an arithmetic number, because the mean of its divisors is an integer number (143637816).

Almost surely, 2^2667557620 is an apocalyptic number.

2667557620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2667557620 is an abundant number, since it is smaller than the sum of its proper divisors (4227057548).

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

2667557620 is a wasteful number, since it uses less digits than its factorization.

2667557620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465720 (or 1465718 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 46.

The square root of 2667557620 is about 51648.4038475537. The cubic root of 2667557620 is about 1386.8769696395.

The spelling of 2667557620 in words is "two billion, six hundred sixty-seven million, five hundred fifty-seven thousand, six hundred twenty".