721264035 has 16 divisors (see below), whose sum is σ = 1214760960. Its totient is φ = 364428000.

The previous prime is 721264013. The next prime is 721264039. The reversal of 721264035 is 530462127.

It is not a de Polignac number, because 721264035 - 2¹² = 721259939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 721263993 and 721264011.

It is not an unprimeable number, because it can be changed into a prime (721264039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265091 + ... + 1265660.

It is an arithmetic number, because the mean of its divisors is an integer number (75922560).

Almost surely, 2^721264035 is an apocalyptic number.

721264035 is a deficient number, since it is larger than the sum of its proper divisors (493496925).

721264035 is a wasteful number, since it uses less digits than its factorization.

721264035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2530778.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 721264035 is about 26856.3593027797. The cubic root of 721264035 is about 896.8051475259.

The spelling of 721264035 in words is "seven hundred twenty-one million, two hundred sixty-four thousand, thirty-five".