102690613 has 2 divisors, whose sum is σ = 102690614. Its totient is φ = 102690612.

The previous prime is 102690593. The next prime is 102690617. The reversal of 102690613 is 316096201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 32012964 = 8407^2 + 5658^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102690613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102690617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51345306 + 51345307.

It is an arithmetic number, because the mean of its divisors is an integer number (51345307).

Almost surely, 2^102690613 is an apocalyptic number.

It is an amenable number.

102690613 is a deficient number, since it is larger than the sum of its proper divisors (1).

102690613 is an equidigital number, since it uses as much as digits as its factorization.

102690613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 102690613 is about 10133.6376982799. The cubic root of 102690613 is about 468.2850021538.

The spelling of 102690613 in words is "one hundred two million, six hundred ninety thousand, six hundred thirteen".