87651423 has 16 divisors (see below), whose sum is σ = 130720000. Its totient is φ = 58044600.

The previous prime is 87651401. The next prime is 87651433. The reversal of 87651423 is 32415678.

It is not a de Polignac number, because 87651423 - 2⁵ = 87651391 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 (87651433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6673 + ... + 14826.

It is an arithmetic number, because the mean of its divisors is an integer number (8170000).

Almost surely, 2^87651423 is an apocalyptic number.

87651423 is a deficient number, since it is larger than the sum of its proper divisors (43068577).

87651423 is a wasteful number, since it uses less digits than its factorization.

87651423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21659 (or 21653 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 87651423 is about 9362.2338680467. The cubic root of 87651423 is about 444.2079467860.

The spelling of 87651423 in words is "eighty-seven million, six hundred fifty-one thousand, four hundred twenty-three".