87690053 has 8 divisors (see below), whose sum is σ = 99821376. Its totient is φ = 76252000.

The previous prime is 87690049. The next prime is 87690077. The reversal of 87690053 is 35009678.

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

It is not a de Polignac number, because 87690053 - 2² = 87690049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87689989 and 87690016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87690853) 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, 173048 + ... + 173553.

It is an arithmetic number, because the mean of its divisors is an integer number (12477672).

Almost surely, 2^87690053 is an apocalyptic number.

It is an amenable number.

87690053 is a deficient number, since it is larger than the sum of its proper divisors (12131323).

87690053 is a wasteful number, since it uses less digits than its factorization.

87690053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346635.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 87690053 is about 9364.2967167855. The cubic root of 87690053 is about 444.2731947577.

The spelling of 87690053 in words is "eighty-seven million, six hundred ninety thousand, fifty-three".