67919121 has 8 divisors (see below), whose sum is σ = 100620960. Its totient is φ = 45279396.

The previous prime is 67919119. The next prime is 67919143. The reversal of 67919121 is 12191976.

It is not a de Polignac number, because 67919121 - 2¹ = 67919119 is a prime.

It is a super-2 number, since 2×67919121² = 9226013994825282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67919101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257735 + ... + 1257788.

It is an arithmetic number, because the mean of its divisors is an integer number (12577620).

Almost surely, 2^67919121 is an apocalyptic number.

It is an amenable number.

67919121 is a deficient number, since it is larger than the sum of its proper divisors (32701839).

67919121 is a wasteful number, since it uses less digits than its factorization.

67919121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515532 (or 2515526 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 67919121 is about 8241.3057824595. The cubic root of 67919121 is about 408.0036223727.

The spelling of 67919121 in words is "sixty-seven million, nine hundred nineteen thousand, one hundred twenty-one".