137977694 has 4 divisors (see below), whose sum is σ = 206966544. Its totient is φ = 68988846.

The previous prime is 137977673. The next prime is 137977703. The reversal of 137977694 is 496779731.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34494422 + ... + 34494425.

It is an arithmetic number, because the mean of its divisors is an integer number (51741636).

Almost surely, 2^137977694 is an apocalyptic number.

137977694 is a deficient number, since it is larger than the sum of its proper divisors (68988850).

137977694 is an equidigital number, since it uses as much as digits as its factorization.

137977694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68988849.

The product of its digits is 2000376, while the sum is 53.

The square root of 137977694 is about 11746.3906796939. The cubic root of 137977694 is about 516.7370808413.

The spelling of 137977694 in words is "one hundred thirty-seven million, nine hundred seventy-seven thousand, six hundred ninety-four".