87446657 has 4 divisors (see below), whose sum is σ = 92590596. Its totient is φ = 82302720.

The previous prime is 87446647. The next prime is 87446659. The reversal of 87446657 is 75664478.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79584241 + 7862416 = 8921^2 + 2804^2 .

It is a cyclic number.

It is not a de Polignac number, because 87446657 - 2⁴ = 87446641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87446659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2571944 + ... + 2571977.

It is an arithmetic number, because the mean of its divisors is an integer number (23147649).

Almost surely, 2^87446657 is an apocalyptic number.

It is an amenable number.

87446657 is a deficient number, since it is larger than the sum of its proper divisors (5143939).

87446657 is a wasteful number, since it uses less digits than its factorization.

87446657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5143938.

The product of its digits is 1128960, while the sum is 47.

The square root of 87446657 is about 9351.2917289538. The cubic root of 87446657 is about 443.8617664118.

The spelling of 87446657 in words is "eighty-seven million, four hundred forty-six thousand, six hundred fifty-seven".