660147454 has 8 divisors (see below), whose sum is σ = 990525888. Its totient is φ = 329972160.

The previous prime is 660147407. The next prime is 660147461. The reversal of 660147454 is 454741066.

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

It is a super-2 number, since 2×660147454² = 871589322045364232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42382 + ... + 55825.

It is an arithmetic number, because the mean of its divisors is an integer number (123815736).

Almost surely, 2^660147454 is an apocalyptic number.

660147454 is a deficient number, since it is larger than the sum of its proper divisors (330378434).

660147454 is a wasteful number, since it uses less digits than its factorization.

660147454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101570.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 660147454 is about 25693.3348166407. The cubic root of 660147454 is about 870.7236037429.

The spelling of 660147454 in words is "six hundred sixty million, one hundred forty-seven thousand, four hundred fifty-four".