69790057 has 2 divisors, whose sum is σ = 69790058. Its totient is φ = 69790056.

The previous prime is 69790033. The next prime is 69790067. The reversal of 69790057 is 75009796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39803481 + 29986576 = 6309^2 + 5476^2 .

It is a cyclic number.

It is not a de Polignac number, because 69790057 - 2²³ = 61401449 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 69789995 and 69790022.

It is not a weakly prime, because it can be changed into another prime (69790067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34895028 + 34895029.

It is an arithmetic number, because the mean of its divisors is an integer number (34895029).

Almost surely, 2^69790057 is an apocalyptic number.

It is an amenable number.

69790057 is a deficient number, since it is larger than the sum of its proper divisors (1).

69790057 is an equidigital number, since it uses as much as digits as its factorization.

69790057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 69790057 is about 8354.0443498942. The cubic root of 69790057 is about 411.7161007218.

The spelling of 69790057 in words is "sixty-nine million, seven hundred ninety thousand, fifty-seven".