70768157 has 2 divisors, whose sum is σ = 70768158. Its totient is φ = 70768156.

The previous prime is 70768151. The next prime is 70768163. The reversal of 70768157 is 75186707.

It is a balanced prime because it is at equal distance from previous prime (70768151) and next prime (70768163).

It can be written as a sum of positive squares in only one way, i.e., 38800441 + 31967716 = 6229^2 + 5654^2 .

It is an emirp because it is prime and its reverse (75186707) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70768157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70768151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35384078 + 35384079.

It is an arithmetic number, because the mean of its divisors is an integer number (35384079).

Almost surely, 2^70768157 is an apocalyptic number.

It is an amenable number.

70768157 is a deficient number, since it is larger than the sum of its proper divisors (1).

70768157 is an equidigital number, since it uses as much as digits as its factorization.

70768157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82320, while the sum is 41.

The square root of 70768157 is about 8412.3811730092. The cubic root of 70768157 is about 413.6305700330.

The spelling of 70768157 in words is "seventy million, seven hundred sixty-eight thousand, one hundred fifty-seven".