667352623620 has 24 divisors (see below), whose sum is σ = 1868587346304. Its totient is φ = 177960699616.

The previous prime is 667352623607. The next prime is 667352623621. The reversal of 667352623620 is 26326253766.

It is a self number, because there is not a number n which added to its sum of digits gives 667352623620.

It is not an unprimeable number, because it can be changed into a prime (667352623621) 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, 5561271804 + ... + 5561271923.

It is an arithmetic number, because the mean of its divisors is an integer number (77857806096).

Almost surely, 2^667352623620 is an apocalyptic number.

667352623620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

667352623620 is an abundant number, since it is smaller than the sum of its proper divisors (1201234722684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667352623620 is a wasteful number, since it uses less digits than its factorization.

667352623620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122543739 (or 11122543737 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 48.

The spelling of 667352623620 in words is "six hundred sixty-seven billion, three hundred fifty-two million, six hundred twenty-three thousand, six hundred twenty".