68240474 has 8 divisors (see below), whose sum is σ = 103266900. Its totient is φ = 33818176.

The previous prime is 68240467. The next prime is 68240477. The reversal of 68240474 is 47404286.

It can be written as a sum of positive squares in 2 ways, for example, as 39778249 + 28462225 = 6307^2 + 5335^2 .

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

It is a super-3 number, since 3×68240474³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68240477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150749 + ... + 151200.

Almost surely, 2^68240474 is an apocalyptic number.

68240474 is a deficient number, since it is larger than the sum of its proper divisors (35026426).

68240474 is a wasteful number, since it uses less digits than its factorization.

68240474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302064.

The product of its (nonzero) digits is 43008, while the sum is 35.

The square root of 68240474 is about 8260.7792610625. The cubic root of 68240474 is about 408.6460872372.

The spelling of 68240474 in words is "sixty-eight million, two hundred forty thousand, four hundred seventy-four".