137646971 has 16 divisors (see below), whose sum is σ = 171944448. Its totient is φ = 107049600.

The previous prime is 137646967. The next prime is 137646979. The reversal of 137646971 is 179646731.

137646971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 137646971 - 2² = 137646967 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137646979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47171 + ... + 50003.

It is an arithmetic number, because the mean of its divisors is an integer number (10746528).

Almost surely, 2^137646971 is an apocalyptic number.

137646971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

137646971 is a deficient number, since it is larger than the sum of its proper divisors (34297477).

137646971 is a wasteful number, since it uses less digits than its factorization.

137646971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482.

The product of its digits is 190512, while the sum is 44.

The square root of 137646971 is about 11732.3045903181. The cubic root of 137646971 is about 516.3238895073.

The spelling of 137646971 in words is "one hundred thirty-seven million, six hundred forty-six thousand, nine hundred seventy-one".