74298649 has 2 divisors, whose sum is σ = 74298650. Its totient is φ = 74298648.

The previous prime is 74298629. The next prime is 74298659. The reversal of 74298649 is 94689247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72590400 + 1708249 = 8520^2 + 1307^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74298649 is a prime.

It is not a weakly prime, because it can be changed into another prime (74298629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37149324 + 37149325.

It is an arithmetic number, because the mean of its divisors is an integer number (37149325).

Almost surely, 2^74298649 is an apocalyptic number.

It is an amenable number.

74298649 is a deficient number, since it is larger than the sum of its proper divisors (1).

74298649 is an equidigital number, since it uses as much as digits as its factorization.

74298649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 49.

The square root of 74298649 is about 8619.6664088583. Note that the first 3 decimals coincide. The cubic root of 74298649 is about 420.3976751205.

It can be divided in two parts, 74298 and 649, that added together give a palindrome (74947).

The spelling of 74298649 in words is "seventy-four million, two hundred ninety-eight thousand, six hundred forty-nine".