660260451 has 8 divisors (see below), whose sum is σ = 884957184. Its totient is φ = 437868680.

The previous prime is 660260437. The next prime is 660260509. The reversal of 660260451 is 154062066.

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 660260451 - 2⁷ = 660260323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (660260551) 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, 575571 + ... + 576716.

It is an arithmetic number, because the mean of its divisors is an integer number (110619648).

Almost surely, 2^660260451 is an apocalyptic number.

660260451 is a deficient number, since it is larger than the sum of its proper divisors (224696733).

660260451 is a wasteful number, since it uses less digits than its factorization.

660260451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152481.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 660260451 is about 25695.5336780539. The cubic root of 660260451 is about 870.7732813016.

The spelling of 660260451 in words is "six hundred sixty million, two hundred sixty thousand, four hundred fifty-one".