660512054 has 8 divisors (see below), whose sum is σ = 996701328. Its totient is φ = 328278280.

The previous prime is 660512051. The next prime is 660512057. The reversal of 660512054 is 450215066.

It is an interprime number because it is at equal distance from previous prime (660512051) and next prime (660512057).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660512051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988457 + ... + 989124.

It is an arithmetic number, because the mean of its divisors is an integer number (124587666).

Almost surely, 2^660512054 is an apocalyptic number.

660512054 is a deficient number, since it is larger than the sum of its proper divisors (336189274).

660512054 is a wasteful number, since it uses less digits than its factorization.

660512054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977750.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 660512054 is about 25700.4290625663. The cubic root of 660512054 is about 870.8838747027.

The spelling of 660512054 in words is "six hundred sixty million, five hundred twelve thousand, fifty-four".