87166061 has 8 divisors (see below), whose sum is σ = 88680384. Its totient is φ = 85659840.

The previous prime is 87166049. The next prime is 87166063. The reversal of 87166061 is 16066178.

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

It is a cyclic number.

It is not a de Polignac number, because 87166061 - 2²⁶ = 20057197 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 (87166063) 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, 22106 + ... + 25748.

It is an arithmetic number, because the mean of its divisors is an integer number (11085048).

Almost surely, 2^87166061 is an apocalyptic number.

It is an amenable number.

87166061 is a deficient number, since it is larger than the sum of its proper divisors (1514323).

87166061 is a wasteful number, since it uses less digits than its factorization.

87166061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4051.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 87166061 is about 9336.2766132972. The cubic root of 87166061 is about 443.3865079653.

The spelling of 87166061 in words is "eighty-seven million, one hundred sixty-six thousand, sixty-one".