70748723 has 4 divisors (see below), whose sum is σ = 74472360. Its totient is φ = 67025088.

The previous prime is 70748707. The next prime is 70748767. The reversal of 70748723 is 32784707.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70748723 - 2⁴ = 70748707 is a prime.

It is a super-2 number, since 2×70748723² = 10010763612261458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70748323) 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 3 ways as a sum of consecutive naturals, for example, 1861790 + ... + 1861827.

It is an arithmetic number, because the mean of its divisors is an integer number (18618090).

Almost surely, 2^70748723 is an apocalyptic number.

70748723 is a deficient number, since it is larger than the sum of its proper divisors (3723637).

70748723 is a wasteful number, since it uses less digits than its factorization.

70748723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3723636.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 70748723 is about 8411.2260105171. The cubic root of 70748723 is about 413.5927035085.

The spelling of 70748723 in words is "seventy million, seven hundred forty-eight thousand, seven hundred twenty-three".