75638349 has 12 divisors (see below), whose sum is σ = 109339776. Its totient is φ = 50386632.

The previous prime is 75638309. The next prime is 75638371. The reversal of 75638349 is 94383657.

75638349 is a `hidden beast` number, since 7 + 5 + 638 + 3 + 4 + 9 = 666.

It is not a de Polignac number, because 75638349 - 2¹⁶ = 75572813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75638309) 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, 13732 + ... + 18434.

It is an arithmetic number, because the mean of its divisors is an integer number (9111648).

Almost surely, 2^75638349 is an apocalyptic number.

It is an amenable number.

75638349 is a deficient number, since it is larger than the sum of its proper divisors (33701427).

75638349 is a wasteful number, since it uses less digits than its factorization.

75638349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6496 (or 6493 counting only the distinct ones).

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

The square root of 75638349 is about 8697.0310451326. The cubic root of 75638349 is about 422.9094083617.

The spelling of 75638349 in words is "seventy-five million, six hundred thirty-eight thousand, three hundred forty-nine".