137561996 has 36 divisors (see below), whose sum is σ = 284975376. Its totient is φ = 57715680.

The previous prime is 137561971. The next prime is 137561999. The reversal of 137561996 is 699165731.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 137561996.

It is not an unprimeable number, because it can be changed into a prime (137561999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4640 + ... + 17223.

Almost surely, 2^137561996 is an apocalyptic number.

It is an amenable number.

137561996 is an abundant number, since it is smaller than the sum of its proper divisors (147413380).

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

137561996 is a wasteful number, since it uses less digits than its factorization.

137561996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21902 (or 21889 counting only the distinct ones).

The product of its digits is 306180, while the sum is 47.

The square root of 137561996 is about 11728.6826199706. The cubic root of 137561996 is about 516.2176184822.

The spelling of 137561996 in words is "one hundred thirty-seven million, five hundred sixty-one thousand, nine hundred ninety-six".