74649629 has 2 divisors, whose sum is σ = 74649630. Its totient is φ = 74649628.

The previous prime is 74649607. The next prime is 74649647. The reversal of 74649629 is 92694647.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62047129 + 12602500 = 7877^2 + 3550^2 .

It is a cyclic number.

It is not a de Polignac number, because 74649629 - 2¹⁶ = 74584093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74649229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37324814 + 37324815.

It is an arithmetic number, because the mean of its divisors is an integer number (37324815).

Almost surely, 2^74649629 is an apocalyptic number.

It is an amenable number.

74649629 is a deficient number, since it is larger than the sum of its proper divisors (1).

74649629 is an equidigital number, since it uses as much as digits as its factorization.

74649629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 74649629 is about 8640.0016782406. The cubic root of 74649629 is about 421.0586088272.

The spelling of 74649629 in words is "seventy-four million, six hundred forty-nine thousand, six hundred twenty-nine".