720774806 has 8 divisors (see below), whose sum is σ = 1144760040. Its totient is φ = 339188128.

The previous prime is 720774797. The next prime is 720774809. The reversal of 720774806 is 608477027.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720774809) 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, 10599596 + ... + 10599663.

It is an arithmetic number, because the mean of its divisors is an integer number (143095005).

Almost surely, 2^720774806 is an apocalyptic number.

720774806 is a deficient number, since it is larger than the sum of its proper divisors (423985234).

720774806 is a wasteful number, since it uses less digits than its factorization.

720774806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21199278.

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 720774806 is about 26847.2495053031. The cubic root of 720774806 is about 896.6023358413.

The spelling of 720774806 in words is "seven hundred twenty million, seven hundred seventy-four thousand, eight hundred six".