720474424 has 8 divisors (see below), whose sum is σ = 1350889560. Its totient is φ = 360237208.

The previous prime is 720474407. The next prime is 720474431. The reversal of 720474424 is 424474027.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 720474424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45029644 + ... + 45029659.

It is an arithmetic number, because the mean of its divisors is an integer number (168861195).

Almost surely, 2^720474424 is an apocalyptic number.

It is an amenable number.

720474424 is a deficient number, since it is larger than the sum of its proper divisors (630415136).

720474424 is a wasteful number, since it uses less digits than its factorization.

720474424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90059309 (or 90059305 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 34.

The square root of 720474424 is about 26841.6546434828. The cubic root of 720474424 is about 896.4777659004.

The spelling of 720474424 in words is "seven hundred twenty million, four hundred seventy-four thousand, four hundred twenty-four".