55690699 has 2 divisors, whose sum is σ = 55690700. Its totient is φ = 55690698.

The previous prime is 55690681. The next prime is 55690709. The reversal of 55690699 is 99609655.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55690699 - 2⁷ = 55690571 is a prime.

It is not a weakly prime, because it can be changed into another prime (55690619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27845349 + 27845350.

It is an arithmetic number, because the mean of its divisors is an integer number (27845350).

Almost surely, 2^55690699 is an apocalyptic number.

55690699 is a deficient number, since it is larger than the sum of its proper divisors (1).

55690699 is an equidigital number, since it uses as much as digits as its factorization.

55690699 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 656100, while the sum is 49.

The square root of 55690699 is about 7462.6201162862. The cubic root of 55690699 is about 381.8805648929.

The spelling of 55690699 in words is "fifty-five million, six hundred ninety thousand, six hundred ninety-nine".