74770000 has 50 divisors (see below), whose sum is σ = 181049858. Its totient is φ = 29904000.

The previous prime is 74769979. The next prime is 74770001. The reversal of 74770000 is 7747.

It can be written as a sum of positive squares in 5 ways, for example, as 10705984 + 64064016 = 3272^2 + 8004^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74770001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6262 + ... + 13738.

Almost surely, 2^74770000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74770000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90524929).

74770000 is an abundant number, since it is smaller than the sum of its proper divisors (106279858).

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

74770000 is an equidigital number, since it uses as much as digits as its factorization.

74770000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7505 (or 7484 counting only the distinct ones).

The product of its (nonzero) digits is 1372, while the sum is 25.

The square root of 74770000 is about 8646.9647854030. The cubic root of 74770000 is about 421.2848034243.

Adding to 74770000 its reverse (7747), we get a palindrome (74777747).

The spelling of 74770000 in words is "seventy-four million, seven hundred seventy thousand".