87270661 has 2 divisors, whose sum is σ = 87270662. Its totient is φ = 87270660.

The previous prime is 87270613. The next prime is 87270709. The reversal of 87270661 is 16607278.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (87270613) and next prime (87270709).

It can be written as a sum of positive squares in only one way, i.e., 80013025 + 7257636 = 8945^2 + 2694^2 .

It is a cyclic number.

It is not a de Polignac number, because 87270661 - 2²¹ = 85173509 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87270661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87270961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43635330 + 43635331.

It is an arithmetic number, because the mean of its divisors is an integer number (43635331).

Almost surely, 2^87270661 is an apocalyptic number.

It is an amenable number.

87270661 is a deficient number, since it is larger than the sum of its proper divisors (1).

87270661 is an equidigital number, since it uses as much as digits as its factorization.

87270661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 87270661 is about 9341.8767386430. The cubic root of 87270661 is about 443.5637929053.

The spelling of 87270661 in words is "eighty-seven million, two hundred seventy thousand, six hundred sixty-one".