87274661 has 8 divisors (see below), whose sum is σ = 87875544. Its totient is φ = 86676480.

The previous prime is 87274637. The next prime is 87274679. The reversal of 87274661 is 16647278.

It can be written as a sum of positive squares in 4 ways, for example, as 19936225 + 67338436 = 4465^2 + 8206^2 .

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 87274661 - 2⁶ = 87274597 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 (87274861) 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, 161051 + ... + 161591.

It is an arithmetic number, because the mean of its divisors is an integer number (10984443).

Almost surely, 2^87274661 is an apocalyptic number.

It is an amenable number.

87274661 is a deficient number, since it is larger than the sum of its proper divisors (600883).

87274661 is a wasteful number, since it uses less digits than its factorization.

87274661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its digits is 112896, while the sum is 41.

The square root of 87274661 is about 9342.0908259340. The cubic root of 87274661 is about 443.5705696313.

The spelling of 87274661 in words is "eighty-seven million, two hundred seventy-four thousand, six hundred sixty-one".