67726401 has 4 divisors (see below), whose sum is σ = 90301872. Its totient is φ = 45150932.

The previous prime is 67726381. The next prime is 67726411. The reversal of 67726401 is 10462776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67726401 - 2¹⁰ = 67725377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (67726411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11287731 + ... + 11287736.

It is an arithmetic number, because the mean of its divisors is an integer number (22575468).

Almost surely, 2^67726401 is an apocalyptic number.

It is an amenable number.

67726401 is a deficient number, since it is larger than the sum of its proper divisors (22575471).

67726401 is a wasteful number, since it uses less digits than its factorization.

67726401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22575470.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 67726401 is about 8229.6051545624. The cubic root of 67726401 is about 407.6173543845.

The spelling of 67726401 in words is "sixty-seven million, seven hundred twenty-six thousand, four hundred one".