70690357 has 2 divisors, whose sum is σ = 70690358. Its totient is φ = 70690356.

The previous prime is 70690343. The next prime is 70690363. The reversal of 70690357 is 75309607.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39765636 + 30924721 = 6306^2 + 5561^2 .

It is a cyclic number.

It is not a de Polignac number, because 70690357 - 2⁷ = 70690229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70690157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35345178 + 35345179.

It is an arithmetic number, because the mean of its divisors is an integer number (35345179).

Almost surely, 2^70690357 is an apocalyptic number.

It is an amenable number.

70690357 is a deficient number, since it is larger than the sum of its proper divisors (1).

70690357 is an equidigital number, since it uses as much as digits as its factorization.

70690357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39690, while the sum is 37.

The square root of 70690357 is about 8407.7557647686. The cubic root of 70690357 is about 413.4789375304.

The spelling of 70690357 in words is "seventy million, six hundred ninety thousand, three hundred fifty-seven".