137690571 has 4 divisors (see below), whose sum is σ = 183587432. Its totient is φ = 91793712.

The previous prime is 137690569. The next prime is 137690591. The reversal of 137690571 is 175096731.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 137690571 - 2¹ = 137690569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137690551) 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, 22948426 + ... + 22948431.

It is an arithmetic number, because the mean of its divisors is an integer number (45896858).

Almost surely, 2^137690571 is an apocalyptic number.

137690571 is a deficient number, since it is larger than the sum of its proper divisors (45896861).

137690571 is an equidigital number, since it uses as much as digits as its factorization.

137690571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45896860.

The product of its (nonzero) digits is 39690, while the sum is 39.

The square root of 137690571 is about 11734.1625606602. The cubic root of 137690571 is about 516.3783993522.

The spelling of 137690571 in words is "one hundred thirty-seven million, six hundred ninety thousand, five hundred seventy-one".