75338649 has 12 divisors (see below), whose sum is σ = 112333312. Its totient is φ = 48605400.

The previous prime is 75338647. The next prime is 75338651. The reversal of 75338649 is 94683357.

It is an interprime number because it is at equal distance from previous prime (75338647) and next prime (75338651).

It is not a de Polignac number, because 75338649 - 2¹ = 75338647 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75338647) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134737 + ... + 135294.

Almost surely, 2^75338649 is an apocalyptic number.

It is an amenable number.

75338649 is a deficient number, since it is larger than the sum of its proper divisors (36994663).

75338649 is a wasteful number, since it uses less digits than its factorization.

75338649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270068 (or 270065 counting only the distinct ones).

The product of its digits is 544320, while the sum is 45.

The square root of 75338649 is about 8679.7839258820. The cubic root of 75338649 is about 422.3501077704.

It can be divided in two parts, 75 and 338649, that added together give a square (338724 = 582²).

The spelling of 75338649 in words is "seventy-five million, three hundred thirty-eight thousand, six hundred forty-nine".