67400461 has 4 divisors (see below), whose sum is σ = 71365212. Its totient is φ = 63435712.

The previous prime is 67400453. The next prime is 67400483. The reversal of 67400461 is 16400476.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34739236 + 32661225 = 5894^2 + 5715^2 .

It is a cyclic number.

It is not a de Polignac number, because 67400461 - 2³ = 67400453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67400441) 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, 1982350 + ... + 1982383.

It is an arithmetic number, because the mean of its divisors is an integer number (17841303).

Almost surely, 2^67400461 is an apocalyptic number.

It is an amenable number.

67400461 is a deficient number, since it is larger than the sum of its proper divisors (3964751).

67400461 is a wasteful number, since it uses less digits than its factorization.

67400461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3964750.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 67400461 is about 8209.7783770331. The cubic root of 67400461 is about 406.9624029809.

The spelling of 67400461 in words is "sixty-seven million, four hundred thousand, four hundred sixty-one".