720623974 has 16 divisors (see below), whose sum is σ = 1241568000. Its totient is φ = 307285704.

The previous prime is 720623909. The next prime is 720623977. The reversal of 720623974 is 479326027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720623977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126544 + ... + 132115.

It is an arithmetic number, because the mean of its divisors is an integer number (77598000).

Almost surely, 2^720623974 is an apocalyptic number.

720623974 is a deficient number, since it is larger than the sum of its proper divisors (520944026).

720623974 is a wasteful number, since it uses less digits than its factorization.

720623974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258867.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 720623974 is about 26844.4402809967. The cubic root of 720623974 is about 896.5397893719.

The spelling of 720623974 in words is "seven hundred twenty million, six hundred twenty-three thousand, nine hundred seventy-four".