70664993 has 8 divisors (see below), whose sum is σ = 84271488. Its totient is φ = 57936384.

The previous prime is 70664989. The next prime is 70665013. The reversal of 70664993 is 39946607.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70664993 - 2² = 70664989 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70664963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219296 + ... + 219617.

It is an arithmetic number, because the mean of its divisors is an integer number (10533936).

Almost surely, 2^70664993 is an apocalyptic number.

It is an amenable number.

70664993 is a deficient number, since it is larger than the sum of its proper divisors (13606495).

70664993 is a wasteful number, since it uses less digits than its factorization.

70664993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438943.

The product of its (nonzero) digits is 244944, while the sum is 44.

The square root of 70664993 is about 8406.2472602226. The cubic root of 70664993 is about 413.4294789490.

The spelling of 70664993 in words is "seventy million, six hundred sixty-four thousand, nine hundred ninety-three".