87494651 has 4 divisors (see below), whose sum is σ = 88031592. Its totient is φ = 86957712.

The previous prime is 87494647. The next prime is 87494707. The reversal of 87494651 is 15649478.

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 87494651 - 2² = 87494647 is a prime.

It is a super-2 number, since 2×87494651² = 15310627907223602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87494611) 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, 268226 + ... + 268551.

It is an arithmetic number, because the mean of its divisors is an integer number (22007898).

Almost surely, 2^87494651 is an apocalyptic number.

87494651 is a deficient number, since it is larger than the sum of its proper divisors (536941).

87494651 is a wasteful number, since it uses less digits than its factorization.

87494651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536940.

The product of its digits is 241920, while the sum is 44.

The square root of 87494651 is about 9353.8575464885. The cubic root of 87494651 is about 443.9429542136.

The spelling of 87494651 in words is "eighty-seven million, four hundred ninety-four thousand, six hundred fifty-one".