137520663 has 8 divisors (see below), whose sum is σ = 209555328. Its totient is φ = 78583224.

The previous prime is 137520653. The next prime is 137520671. The reversal of 137520663 is 366025731.

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

It is not a de Polignac number, because 137520663 - 2⁵ = 137520631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137520653) 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, 3274281 + ... + 3274322.

It is an arithmetic number, because the mean of its divisors is an integer number (26194416).

Almost surely, 2^137520663 is an apocalyptic number.

137520663 is a deficient number, since it is larger than the sum of its proper divisors (72034665).

137520663 is an equidigital number, since it uses as much as digits as its factorization.

137520663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6548613.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 137520663 is about 11726.9204397403. The cubic root of 137520663 is about 516.1659109835.

The spelling of 137520663 in words is "one hundred thirty-seven million, five hundred twenty thousand, six hundred sixty-three".