74169648 has 80 divisors (see below), whose sum is σ = 243317760. Its totient is φ = 21190464.

The previous prime is 74169647. The next prime is 74169649. The reversal of 74169648 is 84696147.

It is an interprime number because it is at equal distance from previous prime (74169647) and next prime (74169649).

It is a super-2 number, since 2×74169648² = 11002273368887808, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74169643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9240 + ... + 15287.

It is an arithmetic number, because the mean of its divisors is an integer number (3041472).

Almost surely, 2^74169648 is an apocalyptic number.

It is an amenable number.

74169648 is an abundant number, since it is smaller than the sum of its proper divisors (169148112).

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

74169648 is a wasteful number, since it uses less digits than its factorization.

74169648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24551 (or 24539 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 74169648 is about 8612.1802117698. The cubic root of 74169648 is about 420.1542290726.

The spelling of 74169648 in words is "seventy-four million, one hundred sixty-nine thousand, six hundred forty-eight".