720936834 has 16 divisors (see below), whose sum is σ = 1443574272. Its totient is φ = 240028848.

The previous prime is 720936809. The next prime is 720936913. The reversal of 720936834 is 438639027.

It is a super-4 number, since 4×720936834⁴ (a number of 37 digits) contains 4444 as substring.

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, 65314 + ... + 75549.

It is an arithmetic number, because the mean of its divisors is an integer number (90223392).

Almost surely, 2^720936834 is an apocalyptic number.

720936834 is an abundant number, since it is smaller than the sum of its proper divisors (722637438).

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

720936834 is a wasteful number, since it uses less digits than its factorization.

720936834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141721.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 720936834 is about 26850.2669260475. The cubic root of 720936834 is about 896.6695153069.

The spelling of 720936834 in words is "seven hundred twenty million, nine hundred thirty-six thousand, eight hundred thirty-four".