70057387 has 2 divisors, whose sum is σ = 70057388. Its totient is φ = 70057386.

The previous prime is 70057381. The next prime is 70057409. The reversal of 70057387 is 78375007.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70057387 - 2¹¹ = 70055339 is a prime.

It is not a weakly prime, because it can be changed into another prime (70057381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35028693 + 35028694.

It is an arithmetic number, because the mean of its divisors is an integer number (35028694).

Almost surely, 2^70057387 is an apocalyptic number.

70057387 is a deficient number, since it is larger than the sum of its proper divisors (1).

70057387 is an equidigital number, since it uses as much as digits as its factorization.

70057387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41160, while the sum is 37.

The square root of 70057387 is about 8370.0290919447. The cubic root of 70057387 is about 412.2411221704.

The spelling of 70057387 in words is "seventy million, fifty-seven thousand, three hundred eighty-seven".