190668715 has 4 divisors (see below), whose sum is σ = 228802464. Its totient is φ = 152534968.

The previous prime is 190668697. The next prime is 190668727. The reversal of 190668715 is 517866091.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 190668715 - 2⁷ = 190668587 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19066867 + ... + 19066876.

It is an arithmetic number, because the mean of its divisors is an integer number (57200616).

Almost surely, 2^190668715 is an apocalyptic number.

190668715 is a deficient number, since it is larger than the sum of its proper divisors (38133749).

190668715 is an equidigital number, since it uses as much as digits as its factorization.

190668715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38133748.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 190668715 is about 13808.2842887884. The cubic root of 190668715 is about 575.5633697102.

The spelling of 190668715 in words is "one hundred ninety million, six hundred sixty-eight thousand, seven hundred fifteen".