67430661 has 4 divisors (see below), whose sum is σ = 89907552. Its totient is φ = 44953772.

The previous prime is 67430659. The next prime is 67430669. The reversal of 67430661 is 16603476.

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 67430661 - 2¹ = 67430659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67430669) 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, 11238441 + ... + 11238446.

It is an arithmetic number, because the mean of its divisors is an integer number (22476888).

Almost surely, 2^67430661 is an apocalyptic number.

It is an amenable number.

67430661 is a deficient number, since it is larger than the sum of its proper divisors (22476891).

67430661 is a wasteful number, since it uses less digits than its factorization.

67430661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22476890.

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 67430661 is about 8211.6174411622. The cubic root of 67430661 is about 407.0231762022.

The spelling of 67430661 in words is "sixty-seven million, four hundred thirty thousand, six hundred sixty-one".