660250801 has 8 divisors (see below), whose sum is σ = 780592320. Its totient is φ = 546414288.

The previous prime is 660250793. The next prime is 660250841. The reversal of 660250801 is 108052066.

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

It is not a de Polignac number, because 660250801 - 2³ = 660250793 is a prime.

It is a super-2 number, since 2×660250801² = 871862240442283202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 660250801.

It is not an unprimeable number, because it can be changed into a prime (660250841) 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, 1626031 + ... + 1626436.

It is an arithmetic number, because the mean of its divisors is an integer number (97574040).

Almost surely, 2^660250801 is an apocalyptic number.

It is an amenable number.

660250801 is a deficient number, since it is larger than the sum of its proper divisors (120341519).

660250801 is a wasteful number, since it uses less digits than its factorization.

660250801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3252503.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 660250801 is about 25695.3459015441. The cubic root of 660250801 is about 870.7690390348.

The spelling of 660250801 in words is "six hundred sixty million, two hundred fifty thousand, eight hundred one".