722126737 has 4 divisors (see below), whose sum is σ = 732904816. Its totient is φ = 711348660.

The previous prime is 722126707. The next prime is 722126759. The reversal of 722126737 is 737621227.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 722126737 - 2¹⁹ = 721602449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 722126696 and 722126705.

It is not an unprimeable number, because it can be changed into a prime (722126707) 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, 5388939 + ... + 5389072.

It is an arithmetic number, because the mean of its divisors is an integer number (183226204).

Almost surely, 2^722126737 is an apocalyptic number.

It is an amenable number.

722126737 is a deficient number, since it is larger than the sum of its proper divisors (10778079).

722126737 is a wasteful number, since it uses less digits than its factorization.

722126737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10778078.

The product of its digits is 49392, while the sum is 37.

The square root of 722126737 is about 26872.4159129766. The cubic root of 722126737 is about 897.1625604832.

The spelling of 722126737 in words is "seven hundred twenty-two million, one hundred twenty-six thousand, seven hundred thirty-seven".