720606678 has 16 divisors (see below), whose sum is σ = 1572232896. Its totient is φ = 218365640.

The previous prime is 720606631. The next prime is 720606683. The reversal of 720606678 is 876606027.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5459076 + ... + 5459207.

It is an arithmetic number, because the mean of its divisors is an integer number (98264556).

Almost surely, 2^720606678 is an apocalyptic number.

720606678 is an abundant number, since it is smaller than the sum of its proper divisors (851626218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720606678 is a wasteful number, since it uses less digits than its factorization.

720606678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10918299.

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 720606678 is about 26844.1181266958. The cubic root of 720606678 is about 896.5326165713.

The spelling of 720606678 in words is "seven hundred twenty million, six hundred six thousand, six hundred seventy-eight".