117662819 has 2 divisors, whose sum is σ = 117662820. Its totient is φ = 117662818.

The previous prime is 117662803. The next prime is 117662821. The reversal of 117662819 is 918266711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117662819 - 2⁴ = 117662803 is a prime.

It is a super-2 number, since 2×117662819² = 27689077950053522, which contains 22 as substring.

Together with 117662821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (117662869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58831409 + 58831410.

It is an arithmetic number, because the mean of its divisors is an integer number (58831410).

Almost surely, 2^117662819 is an apocalyptic number.

117662819 is a deficient number, since it is larger than the sum of its proper divisors (1).

117662819 is an equidigital number, since it uses as much as digits as its factorization.

117662819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 117662819 is about 10847.2493748415. The cubic root of 117662819 is about 490.0191843107.

The spelling of 117662819 in words is "one hundred seventeen million, six hundred sixty-two thousand, eight hundred nineteen".