660949246 has 4 divisors (see below), whose sum is σ = 991423872. Its totient is φ = 330474622.

The previous prime is 660949231. The next prime is 660949279. The reversal of 660949246 is 642949066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 642949066 = 2 ⋅321474533.

It is a junction number, because it is equal to n+sod(n) for n = 660949196 and 660949205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165237310 + ... + 165237313.

It is an arithmetic number, because the mean of its divisors is an integer number (247855968).

Almost surely, 2^660949246 is an apocalyptic number.

660949246 is a deficient number, since it is larger than the sum of its proper divisors (330474626).

660949246 is a wasteful number, since it uses less digits than its factorization.

660949246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330474625.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 660949246 is about 25708.9331945143. The cubic root of 660949246 is about 871.0759779288.

It can be divided in two parts, 6609 and 49246, that added together give a palindrome (55855).

The spelling of 660949246 in words is "six hundred sixty million, nine hundred forty-nine thousand, two hundred forty-six".