70634687 has 2 divisors, whose sum is σ = 70634688. Its totient is φ = 70634686.

The previous prime is 70634671. The next prime is 70634693. The reversal of 70634687 is 78643607.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70634687 - 2⁴ = 70634671 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70634617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35317343 + 35317344.

It is an arithmetic number, because the mean of its divisors is an integer number (35317344).

Almost surely, 2^70634687 is an apocalyptic number.

70634687 is a deficient number, since it is larger than the sum of its proper divisors (1).

70634687 is an equidigital number, since it uses as much as digits as its factorization.

70634687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 70634687 is about 8404.4444789647. Note that the first 4 decimals coincide. The cubic root of 70634687 is about 413.3703681840.

The spelling of 70634687 in words is "seventy million, six hundred thirty-four thousand, six hundred eighty-seven".