137740487 has 4 divisors (see below), whose sum is σ = 137965800. Its totient is φ = 137515176.

The previous prime is 137740483. The next prime is 137740489. The reversal of 137740487 is 784047731.

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

It is a cyclic number.

It is not a de Polignac number, because 137740487 - 2² = 137740483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137740483) 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, 111737 + ... + 112962.

It is an arithmetic number, because the mean of its divisors is an integer number (34491450).

Almost surely, 2^137740487 is an apocalyptic number.

137740487 is a deficient number, since it is larger than the sum of its proper divisors (225313).

137740487 is an equidigital number, since it uses as much as digits as its factorization.

137740487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225312.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 137740487 is about 11736.2893198830. The cubic root of 137740487 is about 516.4407914969.

The spelling of 137740487 in words is "one hundred thirty-seven million, seven hundred forty thousand, four hundred eighty-seven".