663607416 has 64 divisors (see below), whose sum is σ = 1684281600. Its totient is φ = 217860608.

The previous prime is 663607411. The next prime is 663607423. The reversal of 663607416 is 614706366.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663607411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484765 + ... + 486131.

It is an arithmetic number, because the mean of its divisors is an integer number (26316900).

Almost surely, 2^663607416 is an apocalyptic number.

It is an amenable number.

663607416 is an abundant number, since it is smaller than the sum of its proper divisors (1020674184).

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

663607416 is a wasteful number, since it uses less digits than its factorization.

663607416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1668 (or 1664 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 663607416 is about 25760.5787202074. The cubic root of 663607416 is about 872.2421647368.

The spelling of 663607416 in words is "six hundred sixty-three million, six hundred seven thousand, four hundred sixteen".