137690566 has 8 divisors (see below), whose sum is σ = 222423264. Its totient is φ = 63549480.

The previous prime is 137690551. The next prime is 137690569. The reversal of 137690566 is 665096731.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137690569) 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, 2647870 + ... + 2647921.

It is an arithmetic number, because the mean of its divisors is an integer number (27802908).

Almost surely, 2^137690566 is an apocalyptic number.

137690566 is a deficient number, since it is larger than the sum of its proper divisors (84732698).

137690566 is a wasteful number, since it uses less digits than its factorization.

137690566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295806.

The product of its (nonzero) digits is 204120, while the sum is 43.

The square root of 137690566 is about 11734.1623476071. The cubic root of 137690566 is about 516.3783931018.

The spelling of 137690566 in words is "one hundred thirty-seven million, six hundred ninety thousand, five hundred sixty-six".