70637387 has 2 divisors, whose sum is σ = 70637388. Its totient is φ = 70637386.

The previous prime is 70637321. The next prime is 70637389. The reversal of 70637387 is 78373607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70637387 - 2¹² = 70633291 is a prime.

Together with 70637389, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70637389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35318693 + 35318694.

It is an arithmetic number, because the mean of its divisors is an integer number (35318694).

Almost surely, 2^70637387 is an apocalyptic number.

70637387 is a deficient number, since it is larger than the sum of its proper divisors (1).

70637387 is an equidigital number, since it uses as much as digits as its factorization.

70637387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 148176, while the sum is 41.

The square root of 70637387 is about 8404.6051067257. The cubic root of 70637387 is about 413.3756351231.

The spelling of 70637387 in words is "seventy million, six hundred thirty-seven thousand, three hundred eighty-seven".