720395776 has 20 divisors (see below), whose sum is σ = 1439385552. Its totient is φ = 360197632.

The previous prime is 720395737. The next prime is 720395827. The reversal of 720395776 is 677593027.

It is a happy number.

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, 703000 + ... + 704023.

Almost surely, 2^720395776 is an apocalyptic number.

It is an amenable number.

720395776 is a deficient number, since it is larger than the sum of its proper divisors (718989776).

720395776 is an equidigital number, since it uses as much as digits as its factorization.

720395776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407041 (or 1407025 counting only the distinct ones).

The product of its (nonzero) digits is 555660, while the sum is 46.

The square root of 720395776 is about 26840.1895671398. The cubic root of 720395776 is about 896.4451444561.

It can be divided in two parts, 72039 and 5776, that added together give a triangular number (77815 = T₃₉₄).

The spelling of 720395776 in words is "seven hundred twenty million, three hundred ninety-five thousand, seven hundred seventy-six".