660364451 has 8 divisors (see below), whose sum is σ = 665484624. Its totient is φ = 655256160.

The previous prime is 660364391. The next prime is 660364469. The reversal of 660364451 is 154463066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 660364451 - 2²² = 656170147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660364051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131456 + ... + 136386.

It is an arithmetic number, because the mean of its divisors is an integer number (83185578).

Almost surely, 2^660364451 is an apocalyptic number.

660364451 is a deficient number, since it is larger than the sum of its proper divisors (5120173).

660364451 is a wasteful number, since it uses less digits than its factorization.

660364451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5941.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 660364451 is about 25697.5572963657. The cubic root of 660364451 is about 870.8189984459.

The spelling of 660364451 in words is "six hundred sixty million, three hundred sixty-four thousand, four hundred fifty-one".