660562431 has 16 divisors (see below), whose sum is σ = 903154560. Its totient is φ = 429216480.

The previous prime is 660562423. The next prime is 660562451. The reversal of 660562431 is 134265066.

It is not a de Polignac number, because 660562431 - 2³ = 660562423 is a prime.

It is a super-2 number, since 2×660562431² = 872685450497259522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 660562392 and 660562401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660562451) 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, 58125 + ... + 68553.

It is an arithmetic number, because the mean of its divisors is an integer number (56447160).

Almost surely, 2^660562431 is an apocalyptic number.

660562431 is a deficient number, since it is larger than the sum of its proper divisors (242592129).

660562431 is a wasteful number, since it uses less digits than its factorization.

660562431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10966.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 660562431 is about 25701.4091247931. The cubic root of 660562431 is about 870.9060147991.

The spelling of 660562431 in words is "six hundred sixty million, five hundred sixty-two thousand, four hundred thirty-one".