87046661 has 12 divisors (see below), whose sum is σ = 97513380. Its totient is φ = 77575680.

The previous prime is 87046643. The next prime is 87046669. The reversal of 87046661 is 16664078.

It can be written as a sum of positive squares in 6 ways, for example, as 16654561 + 70392100 = 4081^2 + 8390^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87046661 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 (87046669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3980 + ... + 13781.

It is an arithmetic number, because the mean of its divisors is an integer number (8126115).

Almost surely, 2^87046661 is an apocalyptic number.

It is an amenable number.

87046661 is a deficient number, since it is larger than the sum of its proper divisors (10466719).

87046661 is a wasteful number, since it uses less digits than its factorization.

87046661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17816 (or 17803 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 87046661 is about 9329.8800099465. The cubic root of 87046661 is about 443.1839652960.

The spelling of 87046661 in words is "eighty-seven million, forty-six thousand, six hundred sixty-one".