87854917 has 16 divisors (see below), whose sum is σ = 97320960. Its totient is φ = 78935472.

The previous prime is 87854911. The next prime is 87854939. The reversal of 87854917 is 71945878.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87854917 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 (87854911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54708 + ... + 56290.

It is an arithmetic number, because the mean of its divisors is an integer number (6082560).

Almost surely, 2^87854917 is an apocalyptic number.

It is an amenable number.

87854917 is a deficient number, since it is larger than the sum of its proper divisors (9466043).

87854917 is a wasteful number, since it uses less digits than its factorization.

87854917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752.

The product of its digits is 564480, while the sum is 49.

The square root of 87854917 is about 9373.0953798625. The cubic root of 87854917 is about 444.5514429722.

The spelling of 87854917 in words is "eighty-seven million, eight hundred fifty-four thousand, nine hundred seventeen".