68424669 has 18 divisors (see below), whose sum is σ = 102641630. Its totient is φ = 45612072.

The previous prime is 68424667. The next prime is 68424691. The reversal of 68424669 is 96642486.

It can be written as a sum of positive squares in only one way, i.e., 68260644 + 164025 = 8262^2 + 405^2 .

It is not a de Polignac number, because 68424669 - 2¹ = 68424667 is a prime.

It is a super-2 number, since 2×68424669² = 9363870655519122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68424661) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1347 + ... + 11775.

Almost surely, 2^68424669 is an apocalyptic number.

It is an amenable number.

68424669 is a deficient number, since it is larger than the sum of its proper divisors (34216961).

68424669 is an frugal number, since it uses more digits than its factorization.

68424669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10453 (or 10432 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 68424669 is about 8271.9205146084. The cubic root of 68424669 is about 409.0134300542.

It can be divided in two parts, 6842 and 4669, that added together give a palindrome (11511).

The spelling of 68424669 in words is "sixty-eight million, four hundred twenty-four thousand, six hundred sixty-nine".