660465626547 has 6 divisors (see below), whose sum is σ = 880622712228. Its totient is φ = 440309479284.

The previous prime is 660465626531. The next prime is 660465626549. The reversal of 660465626547 is 745626564066.

It is not a de Polignac number, because 660465626547 - 2⁴ = 660465626531 is a prime.

It is a super-2 number, since 2×660465626547² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (660465626549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1173018 + ... + 1642224.

It is an arithmetic number, because the mean of its divisors is an integer number (146770452038).

Almost surely, 2^660465626547 is an apocalyptic number.

660465626547 is a deficient number, since it is larger than the sum of its proper divisors (220157085681).

660465626547 is an frugal number, since it uses more digits than its factorization.

660465626547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938417 (or 469210 counting only the distinct ones).

The product of its (nonzero) digits is 43545600, while the sum is 57.

The spelling of 660465626547 in words is "six hundred sixty billion, four hundred sixty-five million, six hundred twenty-six thousand, five hundred forty-seven".