87372079 has 4 divisors (see below), whose sum is σ = 87405480. Its totient is φ = 87338680.

The previous prime is 87372067. The next prime is 87372083. The reversal of 87372079 is 97027378.

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 87372079 - 2⁷ = 87371951 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 (87372049) 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, 12409 + ... + 18130.

It is an arithmetic number, because the mean of its divisors is an integer number (21851370).

Almost surely, 2^87372079 is an apocalyptic number.

87372079 is a deficient number, since it is larger than the sum of its proper divisors (33401).

87372079 is a wasteful number, since it uses less digits than its factorization.

87372079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33400.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 87372079 is about 9347.3033009526. The cubic root of 87372079 is about 443.7355495129.

It can be divided in two parts, 8737 and 2079, that added together give a square (10816 = 104²).

The spelling of 87372079 in words is "eighty-seven million, three hundred seventy-two thousand, seventy-nine".