67919990 has 8 divisors (see below), whose sum is σ = 122256000. Its totient is φ = 27167992.

The previous prime is 67919953. The next prime is 67920007. The reversal of 67919990 is 9991976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×67919990² = 9226250083200200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3395990 + ... + 3396009.

It is an arithmetic number, because the mean of its divisors is an integer number (15282000).

Almost surely, 2^67919990 is an apocalyptic number.

67919990 is a deficient number, since it is larger than the sum of its proper divisors (54336010).

67919990 is a wasteful number, since it uses less digits than its factorization.

67919990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6792006.

The product of its (nonzero) digits is 275562, while the sum is 50.

The square root of 67919990 is about 8241.3585045185. The cubic root of 67919990 is about 408.0053624503.

The spelling of 67919990 in words is "sixty-seven million, nine hundred nineteen thousand, nine hundred ninety".