67961099 has 4 divisors (see below), whose sum is σ = 68077464. Its totient is φ = 67844736.

The previous prime is 67961071. The next prime is 67961111. The reversal of 67961099 is 99016976.

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 67961099 - 2¹² = 67957003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67961009) 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, 57302 + ... + 58475.

It is an arithmetic number, because the mean of its divisors is an integer number (17019366).

Almost surely, 2^67961099 is an apocalyptic number.

67961099 is a deficient number, since it is larger than the sum of its proper divisors (116365).

67961099 is a wasteful number, since it uses less digits than its factorization.

67961099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116364.

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 67961099 is about 8243.8521942112. The cubic root of 67961099 is about 408.0876617835.

The spelling of 67961099 in words is "sixty-seven million, nine hundred sixty-one thousand, ninety-nine".