117621667 has 2 divisors, whose sum is σ = 117621668. Its totient is φ = 117621666.

The previous prime is 117621659. The next prime is 117621677. The reversal of 117621667 is 766126711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 117621667 - 2³ = 117621659 is a prime.

It is not a weakly prime, because it can be changed into another prime (117621677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58810833 + 58810834.

It is an arithmetic number, because the mean of its divisors is an integer number (58810834).

Almost surely, 2^117621667 is an apocalyptic number.

117621667 is a deficient number, since it is larger than the sum of its proper divisors (1).

117621667 is an equidigital number, since it uses as much as digits as its factorization.

117621667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 117621667 is about 10845.3523225389. The cubic root of 117621667 is about 489.9620503721.

The spelling of 117621667 in words is "one hundred seventeen million, six hundred twenty-one thousand, six hundred sixty-seven".