70631377 has 2 divisors, whose sum is σ = 70631378. Its totient is φ = 70631376.

The previous prime is 70631359. The next prime is 70631453. The reversal of 70631377 is 77313607.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62157456 + 8473921 = 7884^2 + 2911^2 .

It is a cyclic number.

It is not a de Polignac number, because 70631377 - 2¹¹ = 70629329 is a prime.

It is a super-2 number, since 2×70631377² = 9977582833832258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70631347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35315688 + 35315689.

It is an arithmetic number, because the mean of its divisors is an integer number (35315689).

Almost surely, 2^70631377 is an apocalyptic number.

It is an amenable number.

70631377 is a deficient number, since it is larger than the sum of its proper divisors (1).

70631377 is an equidigital number, since it uses as much as digits as its factorization.

70631377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18522, while the sum is 34.

The square root of 70631377 is about 8404.2475570392. The cubic root of 70631377 is about 413.3639111238.

The spelling of 70631377 in words is "seventy million, six hundred thirty-one thousand, three hundred seventy-seven".