87765974 has 16 divisors (see below), whose sum is σ = 132846480. Its totient is φ = 43486080.

The previous prime is 87765973. The next prime is 87766031. The reversal of 87765974 is 47956778.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87765973) 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, 153962 + ... + 154530.

It is an arithmetic number, because the mean of its divisors is an integer number (8302905).

Almost surely, 2^87765974 is an apocalyptic number.

87765974 is a deficient number, since it is larger than the sum of its proper divisors (45080506).

87765974 is a wasteful number, since it uses less digits than its factorization.

87765974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135.

The product of its digits is 2963520, while the sum is 53.

The square root of 87765974 is about 9368.3495878410. The cubic root of 87765974 is about 444.4013732474.

The spelling of 87765974 in words is "eighty-seven million, seven hundred sixty-five thousand, nine hundred seventy-four".