667181625662 has 16 divisors (see below), whose sum is σ = 1016315167392. Its totient is φ = 328449004800.

The previous prime is 667181625659. The next prime is 667181625667. The reversal of 667181625662 is 266526181766.

It is a junction number, because it is equal to n+sod(n) for n = 667181625598 and 667181625607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667181625667) 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, 9741143 + ... + 9809394.

It is an arithmetic number, because the mean of its divisors is an integer number (63519697962).

Almost surely, 2^667181625662 is an apocalyptic number.

667181625662 is a deficient number, since it is larger than the sum of its proper divisors (349133541730).

667181625662 is a wasteful number, since it uses less digits than its factorization.

667181625662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19550803.

The product of its digits is 8709120, while the sum is 56.

The spelling of 667181625662 in words is "six hundred sixty-seven billion, one hundred eighty-one million, six hundred twenty-five thousand, six hundred sixty-two".