76549638 has 16 divisors (see below), whose sum is σ = 167017536. Its totient is φ = 23196840.

The previous prime is 76549607. The next prime is 76549639. The reversal of 76549638 is 83694567.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76549639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579856 + ... + 579987.

It is an arithmetic number, because the mean of its divisors is an integer number (10438596).

Almost surely, 2^76549638 is an apocalyptic number.

76549638 is an abundant number, since it is smaller than the sum of its proper divisors (90467898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76549638 is a wasteful number, since it uses less digits than its factorization.

76549638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1159859.

The product of its digits is 1088640, while the sum is 48.

The square root of 76549638 is about 8749.2649977012. The cubic root of 76549638 is about 424.6010336636.

Subtracting 76549638 from its reverse (83694567), we obtain a square (7144929 = 2673²).

It can be divided in two parts, 765 and 49638, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 76549638 in words is "seventy-six million, five hundred forty-nine thousand, six hundred thirty-eight".