663934374 has 16 divisors (see below), whose sum is σ = 1475409840. Its totient is φ = 221311440.

The previous prime is 663934373. The next prime is 663934387. The reversal of 663934374 is 473439366.

663934374 is a `hidden beast` number, since 6 + 639 + 3 + 4 + 3 + 7 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663934373) 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, 6147487 + ... + 6147594.

It is an arithmetic number, because the mean of its divisors is an integer number (92213115).

Almost surely, 2^663934374 is an apocalyptic number.

663934374 is an abundant number, since it is smaller than the sum of its proper divisors (811475466).

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

663934374 is a wasteful number, since it uses less digits than its factorization.

663934374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12295092 (or 12295086 counting only the distinct ones).

The product of its digits is 979776, while the sum is 45.

The square root of 663934374 is about 25766.9240306250. The cubic root of 663934374 is about 872.3853918531.

The spelling of 663934374 in words is "six hundred sixty-three million, nine hundred thirty-four thousand, three hundred seventy-four".