945721679 has 16 divisors (see below), whose sum is σ = 1163808000. Its totient is φ = 749998464.

The previous prime is 945721669. The next prime is 945721687. The reversal of 945721679 is 976127549.

It is a cyclic number.

It is not a de Polignac number, because 945721679 - 2⁴ = 945721663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (945721649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60329 + ... + 74370.

It is an arithmetic number, because the mean of its divisors is an integer number (72738000).

Almost surely, 2^945721679 is an apocalyptic number.

945721679 is a deficient number, since it is larger than the sum of its proper divisors (218086321).

945721679 is a wasteful number, since it uses less digits than its factorization.

945721679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134782.

The product of its digits is 952560, while the sum is 50.

The square root of 945721679 is about 30752.5881675023. The cubic root of 945721679 is about 981.5696347696.

The spelling of 945721679 in words is "nine hundred forty-five million, seven hundred twenty-one thousand, six hundred seventy-nine".