67047990 has 32 divisors (see below), whose sum is σ = 167913216. Its totient is φ = 17101920.

The previous prime is 67047989. The next prime is 67048073. The reversal of 67047990 is 9974076.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47896 + ... + 49275.

It is an arithmetic number, because the mean of its divisors is an integer number (5247288).

Almost surely, 2^67047990 is an apocalyptic number.

67047990 is an abundant number, since it is smaller than the sum of its proper divisors (100865226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67047990 is a wasteful number, since it uses less digits than its factorization.

67047990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97204.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 67047990 is about 8188.2837029502. The cubic root of 67047990 is about 406.2517588878.

The spelling of 67047990 in words is "sixty-seven million, forty-seven thousand, nine hundred ninety".