67400099 has 4 divisors (see below), whose sum is σ = 72584736. Its totient is φ = 62215464.

The previous prime is 67400071. The next prime is 67400101. The reversal of 67400099 is 99000476.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 67400099 - 2¹⁶ = 67334563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67400009) 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, 2592299 + ... + 2592324.

It is an arithmetic number, because the mean of its divisors is an integer number (18146184).

Almost surely, 2^67400099 is an apocalyptic number.

67400099 is a deficient number, since it is larger than the sum of its proper divisors (5184637).

67400099 is a wasteful number, since it uses less digits than its factorization.

67400099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184636.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 67400099 is about 8209.7563301233. The cubic root of 67400099 is about 406.9616743970.

The spelling of 67400099 in words is "sixty-seven million, four hundred thousand, ninety-nine".