719999964 has 18 divisors (see below), whose sum is σ = 1820000000. Its totient is φ = 239999976.

The previous prime is 719999939. The next prime is 719999971. The reversal of 719999964 is 469999917.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9999964 + ... + 10000035.

Almost surely, 2^719999964 is an apocalyptic number.

It is an amenable number.

719999964 is an abundant number, since it is smaller than the sum of its proper divisors (1100000036).

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

719999964 is a wasteful number, since it uses less digits than its factorization.

719999964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20000009 (or 20000004 counting only the distinct ones).

The product of its digits is 9920232, while the sum is 63.

The square root of 719999964 is about 26832.8150591771. The cubic root of 719999964 is about 896.2809343734.

Adding to 719999964 its sum of digits (63), we get a palindrome (720000027).

The spelling of 719999964 in words is "seven hundred nineteen million, nine hundred ninety-nine thousand, nine hundred sixty-four".