67661002 has 8 divisors (see below), whose sum is σ = 104991300. Its totient is φ = 32663904.

The previous prime is 67660993. The next prime is 67661021. The reversal of 67661002 is 20016676.

It can be written as a sum of positive squares in 2 ways, for example, as 57744801 + 9916201 = 7599^2 + 3149^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×67661002² = 9156022383288008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583227 + ... + 583342.

Almost surely, 2^67661002 is an apocalyptic number.

67661002 is a deficient number, since it is larger than the sum of its proper divisors (37330298).

67661002 is a wasteful number, since it uses less digits than its factorization.

67661002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166600.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 67661002 is about 8225.6307964800. The cubic root of 67661002 is about 407.4861089021.

Adding to 67661002 its reverse (20016676), we get a palindrome (87677678).

The spelling of 67661002 in words is "sixty-seven million, six hundred sixty-one thousand, two".