74783641 has 2 divisors, whose sum is σ = 74783642. Its totient is φ = 74783640.

The previous prime is 74783593. The next prime is 74783647. The reversal of 74783641 is 14638747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63920025 + 10863616 = 7995^2 + 3296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74783641 is a prime.

It is a super-2 number, since 2×74783641² = 11185185922433762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74783594 and 74783603.

It is not a weakly prime, because it can be changed into another prime (74783647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37391820 + 37391821.

It is an arithmetic number, because the mean of its divisors is an integer number (37391821).

Almost surely, 2^74783641 is an apocalyptic number.

It is an amenable number.

74783641 is a deficient number, since it is larger than the sum of its proper divisors (1).

74783641 is an equidigital number, since it uses as much as digits as its factorization.

74783641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 112896, while the sum is 40.

The square root of 74783641 is about 8647.7535233146. The cubic root of 74783641 is about 421.3104215268.

The spelling of 74783641 in words is "seventy-four million, seven hundred eighty-three thousand, six hundred forty-one".