70647321 has 8 divisors (see below), whose sum is σ = 94324864. Its totient is φ = 47034000.

The previous prime is 70647299. The next prime is 70647347. The reversal of 70647321 is 12374607.

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

It is not a de Polignac number, because 70647321 - 2⁵ = 70647289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70647361) 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, 13426 + ... + 17931.

It is an arithmetic number, because the mean of its divisors is an integer number (11790608).

Almost surely, 2^70647321 is an apocalyptic number.

It is an amenable number.

70647321 is a deficient number, since it is larger than the sum of its proper divisors (23677543).

70647321 is a wasteful number, since it uses less digits than its factorization.

70647321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32111.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 70647321 is about 8405.1960714786. The cubic root of 70647321 is about 413.3950124021.

The spelling of 70647321 in words is "seventy million, six hundred forty-seven thousand, three hundred twenty-one".