7645256723 has 4 divisors (see below), whose sum is σ = 8233353408. Its totient is φ = 7057160040.

The previous prime is 7645256713. The next prime is 7645256761. The reversal of 7645256723 is 3276525467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3276525467 = 23 ⋅142457629.

It is a cyclic number.

It is not a de Polignac number, because 7645256723 - 2⁸ = 7645256467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7645256713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294048323 + ... + 294048348.

It is an arithmetic number, because the mean of its divisors is an integer number (2058338352).

Almost surely, 2^7645256723 is an apocalyptic number.

7645256723 is a deficient number, since it is larger than the sum of its proper divisors (588096685).

7645256723 is a wasteful number, since it uses less digits than its factorization.

7645256723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588096684.

The product of its digits is 2116800, while the sum is 47.

The square root of 7645256723 is about 87437.1587084118. The cubic root of 7645256723 is about 1969.9900128330.

The spelling of 7645256723 in words is "seven billion, six hundred forty-five million, two hundred fifty-six thousand, seven hundred twenty-three".