68421069 has 12 divisors (see below), whose sum is σ = 99424416. Its totient is φ = 45339912.

The previous prime is 68421047. The next prime is 68421079. The reversal of 68421069 is 96012486.

It is not a de Polignac number, because 68421069 - 2⁵ = 68421037 is a prime.

It is a super-2 number, since 2×68421069² = 9362885366205522, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68421079) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21259 + ... + 24264.

It is an arithmetic number, because the mean of its divisors is an integer number (8285368).

Almost surely, 2^68421069 is an apocalyptic number.

It is an amenable number.

68421069 is a deficient number, since it is larger than the sum of its proper divisors (31003347).

68421069 is a wasteful number, since it uses less digits than its factorization.

68421069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45696 (or 45693 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 68421069 is about 8271.7029081079. The cubic root of 68421069 is about 409.0062568412.

The spelling of 68421069 in words is "sixty-eight million, four hundred twenty-one thousand, sixty-nine".