137638699 has 8 divisors (see below), whose sum is σ = 150312240. Its totient is φ = 124992000.

The previous prime is 137638691. The next prime is 137638723. The reversal of 137638699 is 996836731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137638699 - 2³ = 137638691 is a prime.

It is a super-2 number, since 2×137638699² = 37888822924825202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137638691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4899 + ... + 17299.

It is an arithmetic number, because the mean of its divisors is an integer number (18789030).

Almost surely, 2^137638699 is an apocalyptic number.

137638699 is a deficient number, since it is larger than the sum of its proper divisors (12673541).

137638699 is a wasteful number, since it uses less digits than its factorization.

137638699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13421.

The product of its digits is 1469664, while the sum is 52.

The square root of 137638699 is about 11731.9520541127. The cubic root of 137638699 is about 516.3135463405.

It can be divided in two parts, 137 and 638699, that added together give a palindrome (638836).

The spelling of 137638699 in words is "one hundred thirty-seven million, six hundred thirty-eight thousand, six hundred ninety-nine".