74739678 has 32 divisors (see below), whose sum is σ = 161342496. Its totient is φ = 22944768.

The previous prime is 74739677. The next prime is 74739683. The reversal of 74739678 is 87693747.

It is a self number, because there is not a number n which added to its sum of digits gives 74739678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74739671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47350 + ... + 48902.

It is an arithmetic number, because the mean of its divisors is an integer number (5041953).

Almost surely, 2^74739678 is an apocalyptic number.

74739678 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

74739678 is an abundant number, since it is smaller than the sum of its proper divisors (86602818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74739678 is a wasteful number, since it uses less digits than its factorization.

74739678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its digits is 1778112, while the sum is 51.

The square root of 74739678 is about 8645.2112756138. The cubic root of 74739678 is about 421.2278468687.

The spelling of 74739678 in words is "seventy-four million, seven hundred thirty-nine thousand, six hundred seventy-eight".