663407192 has 64 divisors (see below), whose sum is σ = 1544755200. Its totient is φ = 260651520.

The previous prime is 663407191. The next prime is 663407231. The reversal of 663407192 is 291704366.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663407191) 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, 22928 + ... + 43040.

It is an arithmetic number, because the mean of its divisors is an integer number (24136800).

Almost surely, 2^663407192 is an apocalyptic number.

663407192 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 663407192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (772377600).

663407192 is an abundant number, since it is smaller than the sum of its proper divisors (881348008).

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

663407192 is a wasteful number, since it uses less digits than its factorization.

663407192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20176 (or 20172 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 663407192 is about 25756.6921789270. The cubic root of 663407192 is about 872.1544314483.

The spelling of 663407192 in words is "six hundred sixty-three million, four hundred seven thousand, one hundred ninety-two".