722147457 has 8 divisors (see below), whose sum is σ = 963438784. Its totient is φ = 481143888.

The previous prime is 722147429. The next prime is 722147467. The reversal of 722147457 is 754741227.

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

It is not a de Polignac number, because 722147457 - 2⁷ = 722147329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (722147407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66013 + ... + 76170.

It is an arithmetic number, because the mean of its divisors is an integer number (120429848).

Almost surely, 2^722147457 is an apocalyptic number.

It is an amenable number.

722147457 is a deficient number, since it is larger than the sum of its proper divisors (241291327).

722147457 is a wasteful number, since it uses less digits than its factorization.

722147457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143879.

The product of its digits is 109760, while the sum is 39.

The square root of 722147457 is about 26872.8014356524. The cubic root of 722147457 is about 897.1711411702.

The spelling of 722147457 in words is "seven hundred twenty-two million, one hundred forty-seven thousand, four hundred fifty-seven".