87693457 has 4 divisors (see below), whose sum is σ = 91506240. Its totient is φ = 83880676.

The previous prime is 87693439. The next prime is 87693461. The reversal of 87693457 is 75439678.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87693457 - 2¹⁵ = 87660689 is a prime.

It is a super-2 number, since 2×87693457² = 15380284801221698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87693457.

It is not an unprimeable number, because it can be changed into a prime (87693427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1906357 + ... + 1906402.

It is an arithmetic number, because the mean of its divisors is an integer number (22876560).

Almost surely, 2^87693457 is an apocalyptic number.

It is an amenable number.

87693457 is a deficient number, since it is larger than the sum of its proper divisors (3812783).

87693457 is a wasteful number, since it uses less digits than its factorization.

87693457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3812782.

The product of its digits is 1270080, while the sum is 49.

The square root of 87693457 is about 9364.4784691941. The cubic root of 87693457 is about 444.2789433626.

The spelling of 87693457 in words is "eighty-seven million, six hundred ninety-three thousand, four hundred fifty-seven".