722142865 has 8 divisors (see below), whose sum is σ = 866910528. Its totient is φ = 577488240.

The previous prime is 722142857. The next prime is 722142877. The reversal of 722142865 is 568241227.

It is a happy number.

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

It is not a de Polignac number, because 722142865 - 2³ = 722142857 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13501 + ... + 40330.

It is an arithmetic number, because the mean of its divisors is an integer number (108363816).

Almost surely, 2^722142865 is an apocalyptic number.

It is an amenable number.

722142865 is a deficient number, since it is larger than the sum of its proper divisors (144767663).

722142865 is a wasteful number, since it uses less digits than its factorization.

722142865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56519.

The product of its digits is 53760, while the sum is 37.

The square root of 722142865 is about 26872.7159959688. The cubic root of 722142865 is about 897.1692395186.

It can be divided in two parts, 7221 and 42865, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 722142865 in words is "seven hundred twenty-two million, one hundred forty-two thousand, eight hundred sixty-five".