87421608 has 24 divisors (see below), whose sum is σ = 236767050. Its totient is φ = 29140512.

The previous prime is 87421591. The next prime is 87421669. The reversal of 87421608 is 80612478.

87421608 is a `hidden beast` number, since 8 + 7 + 42 + 1 + 608 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62441604 + 24980004 = 7902^2 + 4998^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 607023 + ... + 607166.

Almost surely, 2^87421608 is an apocalyptic number.

It is an amenable number.

87421608 is an abundant number, since it is smaller than the sum of its proper divisors (149345442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87421608 is a wasteful number, since it uses less digits than its factorization.

87421608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214201 (or 1214194 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 87421608 is about 9349.9522993436. The cubic root of 87421608 is about 443.8193811241.

The spelling of 87421608 in words is "eighty-seven million, four hundred twenty-one thousand, six hundred eight".