720653601 has 8 divisors (see below), whose sum is σ = 961212544. Its totient is φ = 480265200.

The previous prime is 720653587. The next prime is 720653627. The reversal of 720653601 is 106356027.

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

It is not a de Polignac number, because 720653601 - 2⁵ = 720653569 is a prime.

It is a super-2 number, since 2×720653601² = 1038683225268534402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (720653651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32425 + ... + 49926.

It is an arithmetic number, because the mean of its divisors is an integer number (120151568).

Almost surely, 2^720653601 is an apocalyptic number.

It is an amenable number.

720653601 is a deficient number, since it is larger than the sum of its proper divisors (240558943).

720653601 is a wasteful number, since it uses less digits than its factorization.

720653601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85271.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 720653601 is about 26844.9921028113. The cubic root of 720653601 is about 896.5520756781.

The spelling of 720653601 in words is "seven hundred twenty million, six hundred fifty-three thousand, six hundred one".