69995657 has 2 divisors, whose sum is σ = 69995658. Its totient is φ = 69995656.

The previous prime is 69995633. The next prime is 69995671. The reversal of 69995657 is 75659996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69622336 + 373321 = 8344^2 + 611^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69995657 is a prime.

It is a super-4 number, since 4×69995657⁴ (a number of 32 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (69995687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34997828 + 34997829.

It is an arithmetic number, because the mean of its divisors is an integer number (34997829).

Almost surely, 2^69995657 is an apocalyptic number.

It is an amenable number.

69995657 is a deficient number, since it is larger than the sum of its proper divisors (1).

69995657 is an equidigital number, since it uses as much as digits as its factorization.

69995657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4592700, while the sum is 56.

The square root of 69995657 is about 8366.3407174224. The cubic root of 69995657 is about 412.1200065941.

The spelling of 69995657 in words is "sixty-nine million, nine hundred ninety-five thousand, six hundred fifty-seven".