75657838 has 4 divisors (see below), whose sum is σ = 113486760. Its totient is φ = 37828918.

The previous prime is 75657823. The next prime is 75657851. The reversal of 75657838 is 83875657.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 75657791 and 75657800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18914458 + ... + 18914461.

It is an arithmetic number, because the mean of its divisors is an integer number (28371690).

Almost surely, 2^75657838 is an apocalyptic number.

75657838 is a deficient number, since it is larger than the sum of its proper divisors (37828922).

75657838 is a wasteful number, since it uses less digits than its factorization.

75657838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37828921.

The product of its digits is 1411200, while the sum is 49.

The square root of 75657838 is about 8698.1514128003. The cubic root of 75657838 is about 422.9457275648.

The spelling of 75657838 in words is "seventy-five million, six hundred fifty-seven thousand, eight hundred thirty-eight".