137640868 has 12 divisors (see below), whose sum is σ = 248641792. Its totient is φ = 66600360.

The previous prime is 137640859. The next prime is 137640869. The reversal of 137640868 is 868046731.

It is not an unprimeable number, because it can be changed into a prime (137640869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 554880 + ... + 555127.

Almost surely, 2^137640868 is an apocalyptic number.

It is an amenable number.

137640868 is a deficient number, since it is larger than the sum of its proper divisors (111000924).

137640868 is a wasteful number, since it uses less digits than its factorization.

137640868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110042 (or 1110040 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 137640868 is about 11732.0444936081. The cubic root of 137640868 is about 516.3162584609.

The spelling of 137640868 in words is "one hundred thirty-seven million, six hundred forty thousand, eight hundred sixty-eight".