137233906 has 16 divisors (see below), whose sum is σ = 208639800. Its totient is φ = 67691008.

The previous prime is 137233891. The next prime is 137233909. The reversal of 137233906 is 609332731.

It can be written as a sum of positive squares in 4 ways, for example, as 117917881 + 19316025 = 10859^2 + 4395^2 .

It is not an unprimeable number, because it can be changed into a prime (137233909) 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, 143526 + ... + 144478.

Almost surely, 2^137233906 is an apocalyptic number.

137233906 is a deficient number, since it is larger than the sum of its proper divisors (71405894).

137233906 is an equidigital number, since it uses as much as digits as its factorization.

137233906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853.

The product of its (nonzero) digits is 20412, while the sum is 34.

The square root of 137233906 is about 11714.6876185411. The cubic root of 137233906 is about 515.8068929674.

The spelling of 137233906 in words is "one hundred thirty-seven million, two hundred thirty-three thousand, nine hundred six".