74762021 has 2 divisors, whose sum is σ = 74762022. Its totient is φ = 74762020.

The previous prime is 74762003. The next prime is 74762033. The reversal of 74762021 is 12026747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 13060996 = 7855^2 + 3614^2 .

It is an emirp because it is prime and its reverse (12026747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74762021 - 2¹⁰ = 74760997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74762041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37381010 + 37381011.

It is an arithmetic number, because the mean of its divisors is an integer number (37381011).

Almost surely, 2^74762021 is an apocalyptic number.

It is an amenable number.

74762021 is a deficient number, since it is larger than the sum of its proper divisors (1).

74762021 is an equidigital number, since it uses as much as digits as its factorization.

74762021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 74762021 is about 8646.5033973277. The cubic root of 74762021 is about 421.2698172399.

Adding to 74762021 its reverse (12026747), we get a palindrome (86788768).

The spelling of 74762021 in words is "seventy-four million, seven hundred sixty-two thousand, twenty-one".