87611907 has 8 divisors (see below), whose sum is σ = 122964160. Its totient is φ = 55333800.

The previous prime is 87611857. The next prime is 87611917. The reversal of 87611907 is 70911678.

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

It is not a de Polignac number, because 87611907 - 2⁷ = 87611779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87611917) 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, 768469 + ... + 768582.

It is an arithmetic number, because the mean of its divisors is an integer number (15370520).

Almost surely, 2^87611907 is an apocalyptic number.

87611907 is a deficient number, since it is larger than the sum of its proper divisors (35352253).

87611907 is a wasteful number, since it uses less digits than its factorization.

87611907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537073.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 87611907 is about 9360.1232363682. The cubic root of 87611907 is about 444.1411824783.

The spelling of 87611907 in words is "eighty-seven million, six hundred eleven thousand, nine hundred seven".