67990522 has 4 divisors (see below), whose sum is σ = 101985786. Its totient is φ = 33995260.

The previous prime is 67990519. The next prime is 67990537. The reversal of 67990522 is 22509976.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 51998521 + 15992001 = 7211^2 + 3999^2 .

It is a super-2 number, since 2×67990522² = 9245422163664968, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16997629 + ... + 16997632.

Almost surely, 2^67990522 is an apocalyptic number.

67990522 is a deficient number, since it is larger than the sum of its proper divisors (33995264).

67990522 is a wasteful number, since it uses less digits than its factorization.

67990522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33995263.

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 67990522 is about 8245.6365430451. The cubic root of 67990522 is about 408.1465456209.

The spelling of 67990522 in words is "sixty-seven million, nine hundred ninety thousand, five hundred twenty-two".