722423655 has 24 divisors (see below), whose sum is σ = 1275831648. Its totient is φ = 378021696.

The previous prime is 722423633. The next prime is 722423657. The reversal of 722423655 is 556324227.

It is not a de Polignac number, because 722423655 - 2⁵ = 722423623 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722423657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149067 + ... + 153836.

It is an arithmetic number, because the mean of its divisors is an integer number (53159652).

Almost surely, 2^722423655 is an apocalyptic number.

722423655 is a deficient number, since it is larger than the sum of its proper divisors (553407993).

722423655 is a wasteful number, since it uses less digits than its factorization.

722423655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302967 (or 302964 counting only the distinct ones).

The product of its digits is 100800, while the sum is 36.

The square root of 722423655 is about 26877.9399322195. The cubic root of 722423655 is about 897.2855062202.

The spelling of 722423655 in words is "seven hundred twenty-two million, four hundred twenty-three thousand, six hundred fifty-five".