664346492 has 12 divisors (see below), whose sum is σ = 1200110016. Its totient is φ = 321457920.

The previous prime is 664346489. The next prime is 664346521. The reversal of 664346492 is 294643466.

It is a super-2 number, since 2×664346492² = 882712522865412128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2678693 + ... + 2678940.

It is an arithmetic number, because the mean of its divisors is an integer number (100009168).

Almost surely, 2^664346492 is an apocalyptic number.

664346492 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

664346492 is a deficient number, since it is larger than the sum of its proper divisors (535763524).

664346492 is a wasteful number, since it uses less digits than its factorization.

664346492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5357668 (or 5357666 counting only the distinct ones).

The product of its digits is 746496, while the sum is 44.

The square root of 664346492 is about 25774.9198252875. The cubic root of 664346492 is about 872.5658571592.

It can be divided in two parts, 6643 and 46492, that added together give a palindrome (53135).

The spelling of 664346492 in words is "six hundred sixty-four million, three hundred forty-six thousand, four hundred ninety-two".