68929190 has 16 divisors (see below), whose sum is σ = 135352080. Its totient is φ = 25065120.

The previous prime is 68929177. The next prime is 68929219. The reversal of 68929190 is 9192986.

It is a super-2 number, since 2×68929190² = 9502466468112200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313205 + ... + 313424.

It is an arithmetic number, because the mean of its divisors is an integer number (8459505).

Almost surely, 2^68929190 is an apocalyptic number.

68929190 is a deficient number, since it is larger than the sum of its proper divisors (66422890).

68929190 is a wasteful number, since it uses less digits than its factorization.

68929190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626647.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 68929190 is about 8302.3605077110. The cubic root of 68929190 is about 410.0162396899.

The spelling of 68929190 in words is "sixty-eight million, nine hundred twenty-nine thousand, one hundred ninety".