722546064 has 60 divisors (see below), whose sum is σ = 2076792796. Its totient is φ = 234337536.

The previous prime is 722546059. The next prime is 722546093. The reversal of 722546064 is 460645227.

It can be written as a sum of positive squares in 2 ways, for example, as 644753664 + 77792400 = 25392^2 + 8820^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62479 + ... + 73134.

Almost surely, 2^722546064 is an apocalyptic number.

722546064 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is an amenable number.

722546064 is an abundant number, since it is smaller than the sum of its proper divisors (1354246732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

722546064 is a wasteful number, since it uses less digits than its factorization.

722546064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135664 (or 135655 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 722546064 is about 26880.2169634101. The cubic root of 722546064 is about 897.3361826794.

The spelling of 722546064 in words is "seven hundred twenty-two million, five hundred forty-six thousand, sixty-four".