74661330 has 64 divisors (see below), whose sum is σ = 189370368. Its totient is φ = 18809280.

The previous prime is 74661311. The next prime is 74661337. The reversal of 74661330 is 3316647.

It is a super-3 number, since 3×74661330³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (74661337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39057 + ... + 40923.

It is an arithmetic number, because the mean of its divisors is an integer number (2958912).

Almost surely, 2^74661330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74661330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94685184).

74661330 is an abundant number, since it is smaller than the sum of its proper divisors (114709038).

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

74661330 is a wasteful number, since it uses less digits than its factorization.

74661330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 74661330 is about 8640.6787927801. The cubic root of 74661330 is about 421.0806073709.

Adding to 74661330 its reverse (3316647), we get a palindrome (77977977).

The spelling of 74661330 in words is "seventy-four million, six hundred sixty-one thousand, three hundred thirty".