720634374 has 16 divisors (see below), whose sum is σ = 1601409840. Its totient is φ = 240211440.

The previous prime is 720634373. The next prime is 720634381. The reversal of 720634374 is 473436027.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720634373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6672487 + ... + 6672594.

It is an arithmetic number, because the mean of its divisors is an integer number (100088115).

Almost surely, 2^720634374 is an apocalyptic number.

720634374 is an abundant number, since it is smaller than the sum of its proper divisors (880775466).

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

720634374 is a wasteful number, since it uses less digits than its factorization.

720634374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13345092 (or 13345086 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 36.

The square root of 720634374 is about 26844.6339889372. The cubic root of 720634374 is about 896.5441022865.

The spelling of 720634374 in words is "seven hundred twenty million, six hundred thirty-four thousand, three hundred seventy-four".