70623947 has 8 divisors (see below), whose sum is σ = 71497920. Its totient is φ = 69753600.

The previous prime is 70623929. The next prime is 70623977. The reversal of 70623947 is 74932607.

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 70623947 - 2⁸ = 70623691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70623947.

It is not an unprimeable number, because it can be changed into a prime (70623977) 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, 67454 + ... + 68492.

It is an arithmetic number, because the mean of its divisors is an integer number (8937240).

Almost surely, 2^70623947 is an apocalyptic number.

70623947 is a deficient number, since it is larger than the sum of its proper divisors (873973).

70623947 is a wasteful number, since it uses less digits than its factorization.

70623947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 70623947 is about 8403.8055070307. The cubic root of 70623947 is about 413.3494161420.

The spelling of 70623947 in words is "seventy million, six hundred twenty-three thousand, nine hundred forty-seven".