137873566 has 16 divisors (see below), whose sum is σ = 213611904. Its totient is φ = 66699864.

The previous prime is 137873563. The next prime is 137873579. The reversal of 137873566 is 665378731.

137873566 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137873563) 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, 1711 + ... + 16693.

It is an arithmetic number, because the mean of its divisors is an integer number (13350744).

Almost surely, 2^137873566 is an apocalyptic number.

137873566 is a deficient number, since it is larger than the sum of its proper divisors (75738338).

137873566 is a wasteful number, since it uses less digits than its factorization.

137873566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15135.

The product of its digits is 635040, while the sum is 46.

The square root of 137873566 is about 11741.9575029038. The cubic root of 137873566 is about 516.6070590038.

The spelling of 137873566 in words is "one hundred thirty-seven million, eight hundred seventy-three thousand, five hundred sixty-six".