663499542 has 32 divisors (see below), whose sum is σ = 1346970240. Its totient is φ = 217863360.

The previous prime is 663499537. The next prime is 663499547. The reversal of 663499542 is 245994366.

It is an interprime number because it is at equal distance from previous prime (663499537) and next prime (663499547).

It is a junction number, because it is equal to n+sod(n) for n = 663499491 and 663499500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (663499547) 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, 106218 + ... + 112290.

It is an arithmetic number, because the mean of its divisors is an integer number (42092820).

Almost surely, 2^663499542 is an apocalyptic number.

663499542 is an abundant number, since it is smaller than the sum of its proper divisors (683470698).

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

663499542 is a wasteful number, since it uses less digits than its factorization.

663499542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6348.

The product of its digits is 1399680, while the sum is 48.

The square root of 663499542 is about 25758.4848545096. The cubic root of 663499542 is about 872.1948991659.

The spelling of 663499542 in words is "six hundred sixty-three million, four hundred ninety-nine thousand, five hundred forty-two".