722093690 has 8 divisors (see below), whose sum is σ = 1299768660. Its totient is φ = 288837472.

The previous prime is 722093657. The next prime is 722093731. The reversal of 722093690 is 96390227.

It can be written as a sum of positive squares in 2 ways, for example, as 665588401 + 56505289 = 25799^2 + 7517^2 .

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

It is a super-2 number, since 2×722093690² = 1042838594275632200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36104675 + ... + 36104694.

Almost surely, 2^722093690 is an apocalyptic number.

722093690 is a deficient number, since it is larger than the sum of its proper divisors (577674970).

722093690 is a wasteful number, since it uses less digits than its factorization.

722093690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72209376.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 722093690 is about 26871.8010189120. The cubic root of 722093690 is about 897.1488745276.

The spelling of 722093690 in words is "seven hundred twenty-two million, ninety-three thousand, six hundred ninety".