722151667 has 4 divisors (see below), whose sum is σ = 728900856. Its totient is φ = 715402480.

The previous prime is 722151629. The next prime is 722151671. The reversal of 722151667 is 766151227.

722151667 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 766151227 = 1471 ⋅520837.

It is a cyclic number.

It is not a de Polignac number, because 722151667 - 2²⁷ = 587933939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722151967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374434 + ... + 3374647.

It is an arithmetic number, because the mean of its divisors is an integer number (182225214).

Almost surely, 2^722151667 is an apocalyptic number.

722151667 is a deficient number, since it is larger than the sum of its proper divisors (6749189).

722151667 is a wasteful number, since it uses less digits than its factorization.

722151667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749188.

The product of its digits is 35280, while the sum is 37.

The square root of 722151667 is about 26872.8797675277. The cubic root of 722151667 is about 897.1728846199.

The spelling of 722151667 in words is "seven hundred twenty-two million, one hundred fifty-one thousand, six hundred sixty-seven".