70664697 has 8 divisors (see below), whose sum is σ = 104688480. Its totient is φ = 47109780.

The previous prime is 70664687. The next prime is 70664707. The reversal of 70664697 is 79646607.

It is an interprime number because it is at equal distance from previous prime (70664687) and next prime (70664707).

It is not a de Polignac number, because 70664697 - 2¹⁴ = 70648313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70664617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1308579 + ... + 1308632.

It is an arithmetic number, because the mean of its divisors is an integer number (13086060).

Almost surely, 2^70664697 is an apocalyptic number.

It is an amenable number.

70664697 is a deficient number, since it is larger than the sum of its proper divisors (34023783).

70664697 is a wasteful number, since it uses less digits than its factorization.

70664697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2617220 (or 2617214 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 70664697 is about 8406.2296542505. The cubic root of 70664697 is about 413.4289016933.

The spelling of 70664697 in words is "seventy million, six hundred sixty-four thousand, six hundred ninety-seven".