68699421 has 60 divisors (see below), whose sum is σ = 125801280. Its totient is φ = 37149840.

The previous prime is 68699419. The next prime is 68699429. The reversal of 68699421 is 12499686.

It is a happy number.

It is not a de Polignac number, because 68699421 - 2¹ = 68699419 is a prime.

It is a super-2 number, since 2×68699421² = 9439220891470482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68699429) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 74956 + ... + 75866.

It is an arithmetic number, because the mean of its divisors is an integer number (2096688).

Almost surely, 2^68699421 is an apocalyptic number.

It is an amenable number.

68699421 is a deficient number, since it is larger than the sum of its proper divisors (57101859).

68699421 is a wasteful number, since it uses less digits than its factorization.

68699421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 940 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 68699421 is about 8288.5113862502. The cubic root of 68699421 is about 409.5601489556.

It can be divided in two parts, 6869 and 9421, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 68699421 in words is "sixty-eight million, six hundred ninety-nine thousand, four hundred twenty-one".