68705451 has 6 divisors (see below), whose sum is σ = 99241220. Its totient is φ = 45803628.

The previous prime is 68705407. The next prime is 68705467. The reversal of 68705451 is 15450786.

It is not a de Polignac number, because 68705451 - 2¹¹ = 68703403 is a prime.

It is a super-2 number, since 2×68705451² = 9440877994226802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68705851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3816961 + ... + 3816978.

Almost surely, 2^68705451 is an apocalyptic number.

68705451 is a deficient number, since it is larger than the sum of its proper divisors (30535769).

68705451 is a wasteful number, since it uses less digits than its factorization.

68705451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7633945 (or 7633942 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 68705451 is about 8288.8751347816. The cubic root of 68705451 is about 409.5721314702.

It can be divided in two parts, 6870 and 5451, that added together give a palindrome (12321).

The spelling of 68705451 in words is "sixty-eight million, seven hundred five thousand, four hundred fifty-one".