87613697 has 2 divisors, whose sum is σ = 87613698. Its totient is φ = 87613696.

The previous prime is 87613667. The next prime is 87613703. The reversal of 87613697 is 79631678.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87534736 + 78961 = 9356^2 + 281^2 .

It is a cyclic number.

It is not a de Polignac number, because 87613697 - 2⁸ = 87613441 is a prime.

It is a super-3 number, since 3×87613697³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87613637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43806848 + 43806849.

It is an arithmetic number, because the mean of its divisors is an integer number (43806849).

Almost surely, 2^87613697 is an apocalyptic number.

It is an amenable number.

87613697 is a deficient number, since it is larger than the sum of its proper divisors (1).

87613697 is an equidigital number, since it uses as much as digits as its factorization.

87613697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 87613697 is about 9360.2188542790. The cubic root of 87613697 is about 444.1442072091.

The spelling of 87613697 in words is "eighty-seven million, six hundred thirteen thousand, six hundred ninety-seven".