721485201 has 4 divisors (see below), whose sum is σ = 961980272. Its totient is φ = 480990132.

The previous prime is 721485181. The next prime is 721485209. The reversal of 721485201 is 102584127.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 721485201 - 2⁹ = 721484689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721485209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120247531 + ... + 120247536.

It is an arithmetic number, because the mean of its divisors is an integer number (240495068).

Almost surely, 2^721485201 is an apocalyptic number.

It is an amenable number.

721485201 is a deficient number, since it is larger than the sum of its proper divisors (240495071).

721485201 is a wasteful number, since it uses less digits than its factorization.

721485201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240495070.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 721485201 is about 26860.4765594358. The cubic root of 721485201 is about 896.8968026055.

The spelling of 721485201 in words is "seven hundred twenty-one million, four hundred eighty-five thousand, two hundred one".