74677649 has 2 divisors, whose sum is σ = 74677650. Its totient is φ = 74677648.

The previous prime is 74677637. The next prime is 74677661. The reversal of 74677649 is 94677647.

It is a balanced prime because it is at equal distance from previous prime (74677637) and next prime (74677661).

It can be written as a sum of positive squares in only one way, i.e., 70677649 + 4000000 = 8407^2 + 2000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74677649 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74677597 and 74677606.

It is not a weakly prime, because it can be changed into another prime (74677679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37338824 + 37338825.

It is an arithmetic number, because the mean of its divisors is an integer number (37338825).

Almost surely, 2^74677649 is an apocalyptic number.

It is an amenable number.

74677649 is a deficient number, since it is larger than the sum of its proper divisors (1).

74677649 is an equidigital number, since it uses as much as digits as its factorization.

74677649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1778112, while the sum is 50.

The square root of 74677649 is about 8641.6230535704. The cubic root of 74677649 is about 421.1112841788. Note that the first 3 decimals are identical.

The spelling of 74677649 in words is "seventy-four million, six hundred seventy-seven thousand, six hundred forty-nine".