67920401 has 8 divisors (see below), whose sum is σ = 69353064. Its totient is φ = 66493440.

The previous prime is 67920397. The next prime is 67920427. The reversal of 67920401 is 10402976.

It can be written as a sum of positive squares in 4 ways, for example, as 44890000 + 23030401 = 6700^2 + 4799^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 67920401 - 2² = 67920397 is a prime.

It is a super-2 number, since 2×67920401² = 9226361744001602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67920481) 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, 29471 + ... + 31691.

It is an arithmetic number, because the mean of its divisors is an integer number (8669133).

Almost surely, 2^67920401 is an apocalyptic number.

It is an amenable number.

67920401 is a deficient number, since it is larger than the sum of its proper divisors (1432663).

67920401 is a wasteful number, since it uses less digits than its factorization.

67920401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 67920401 is about 8241.3834396902. The cubic root of 67920401 is about 408.0061854278.

The spelling of 67920401 in words is "sixty-seven million, nine hundred twenty thousand, four hundred one".