137656722 has 16 divisors (see below), whose sum is σ = 314644032. Its totient is φ = 39330480.

The previous prime is 137656669. The next prime is 137656747. The reversal of 137656722 is 227656731.

It is a super-2 number, since 2×137656722² = 37898746223570568, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1638729 + ... + 1638812.

It is an arithmetic number, because the mean of its divisors is an integer number (19665252).

Almost surely, 2^137656722 is an apocalyptic number.

137656722 is an abundant number, since it is smaller than the sum of its proper divisors (176987310).

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

137656722 is a wasteful number, since it uses less digits than its factorization.

137656722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3277553.

The product of its digits is 105840, while the sum is 39.

The square root of 137656722 is about 11732.7201449621. The cubic root of 137656722 is about 516.3360814583.

Subtracting 137656722 from its reverse (227656731), we obtain a palindrome (90000009).

The spelling of 137656722 in words is "one hundred thirty-seven million, six hundred fifty-six thousand, seven hundred twenty-two".