75334749 has 32 divisors (see below), whose sum is σ = 118358016. Its totient is φ = 41731200.

The previous prime is 75334711. The next prime is 75334757. The reversal of 75334749 is 94743357.

75334749 = 305² + 306² + ... + 633².

It is not a de Polignac number, because 75334749 - 2¹³ = 75326557 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 75334749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75334249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 125049 + ... + 125649.

It is an arithmetic number, because the mean of its divisors is an integer number (3698688).

Almost surely, 2^75334749 is an apocalyptic number.

It is an amenable number.

75334749 is a deficient number, since it is larger than the sum of its proper divisors (43023267).

75334749 is a wasteful number, since it uses less digits than its factorization.

75334749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its digits is 317520, while the sum is 42.

The square root of 75334749 is about 8679.5592630041. The cubic root of 75334749 is about 422.3428198163.

The spelling of 75334749 in words is "seventy-five million, three hundred thirty-four thousand, seven hundred forty-nine".