67918201 has 8 divisors (see below), whose sum is σ = 73377864. Its totient is φ = 62492160.

The previous prime is 67918189. The next prime is 67918211. The reversal of 67918201 is 10281976.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1071225 + 66846976 = 1035^2 + 8176^2 .

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 67918201 - 2⁷ = 67918073 is a prime.

It is a super-2 number, since 2×67918201² = 9225764054152802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67918211) 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, 4120 + ... + 12361.

It is an arithmetic number, because the mean of its divisors is an integer number (9172233).

Almost surely, 2^67918201 is an apocalyptic number.

67918201 is the 4121-st decagonal number.

It is an amenable number.

67918201 is a deficient number, since it is larger than the sum of its proper divisors (5459663).

67918201 is a wasteful number, since it uses less digits than its factorization.

67918201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16811.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 67918201 is about 8241.2499658729. The cubic root of 67918201 is about 408.0017801569.

The spelling of 67918201 in words is "sixty-seven million, nine hundred eighteen thousand, two hundred one".