722397086 has 4 divisors (see below), whose sum is σ = 1083595632. Its totient is φ = 361198542.

The previous prime is 722397083. The next prime is 722397103. The reversal of 722397086 is 680793227.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×722397086² = 1043715099722582792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722397083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180599270 + ... + 180599273.

It is an arithmetic number, because the mean of its divisors is an integer number (270898908).

Almost surely, 2^722397086 is an apocalyptic number.

722397086 is a deficient number, since it is larger than the sum of its proper divisors (361198546).

722397086 is a wasteful number, since it uses less digits than its factorization.

722397086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361198545.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 722397086 is about 26877.4456747660. The cubic root of 722397086 is about 897.2745060863.

The spelling of 722397086 in words is "seven hundred twenty-two million, three hundred ninety-seven thousand, eighty-six".