87603961 has 2 divisors, whose sum is σ = 87603962. Its totient is φ = 87603960.

The previous prime is 87603949. The next prime is 87604007. The reversal of 87603961 is 16930678.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57836025 + 29767936 = 7605^2 + 5456^2 .

It is a cyclic number.

It is not a de Polignac number, because 87603961 - 2⁷ = 87603833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87603931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43801980 + 43801981.

It is an arithmetic number, because the mean of its divisors is an integer number (43801981).

Almost surely, 2^87603961 is an apocalyptic number.

It is an amenable number.

87603961 is a deficient number, since it is larger than the sum of its proper divisors (1).

87603961 is an equidigital number, since it uses as much as digits as its factorization.

87603961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 87603961 is about 9359.6987665202. The cubic root of 87603961 is about 444.1277548798.

It can be divided in two parts, 8760 and 3961, that added together give a palindrome (12721).

The spelling of 87603961 in words is "eighty-seven million, six hundred three thousand, nine hundred sixty-one".