70752321 has 24 divisors (see below), whose sum is σ = 104232960. Its totient is φ = 46238400.

The previous prime is 70752307. The next prime is 70752361. The reversal of 70752321 is 12325707.

It is not a de Polignac number, because 70752321 - 2⁵ = 70752289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70752361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135541 + ... + 136061.

It is an arithmetic number, because the mean of its divisors is an integer number (4343040).

Almost surely, 2^70752321 is an apocalyptic number.

It is an amenable number.

70752321 is a deficient number, since it is larger than the sum of its proper divisors (33480639).

70752321 is a wasteful number, since it uses less digits than its factorization.

70752321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 70752321 is about 8411.4398886279. The cubic root of 70752321 is about 413.5997146189.

The spelling of 70752321 in words is "seventy million, seven hundred fifty-two thousand, three hundred twenty-one".