87064251 has 8 divisors (see below), whose sum is σ = 122195520. Its totient is φ = 54987912.

The previous prime is 87064249. The next prime is 87064267. The reversal of 87064251 is 15246078.

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

It is not a de Polignac number, because 87064251 - 2¹ = 87064249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87064451) 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, 763665 + ... + 763778.

It is an arithmetic number, because the mean of its divisors is an integer number (15274440).

Almost surely, 2^87064251 is an apocalyptic number.

87064251 is a deficient number, since it is larger than the sum of its proper divisors (35131269).

87064251 is a wasteful number, since it uses less digits than its factorization.

87064251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527465.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 87064251 is about 9330.8226325442. The cubic root of 87064251 is about 443.2138154967.

The spelling of 87064251 in words is "eighty-seven million, sixty-four thousand, two hundred fifty-one".