77633141 has 4 divisors (see below), whose sum is σ = 79731372. Its totient is φ = 75534912.

The previous prime is 77633117. The next prime is 77633161. The reversal of 77633141 is 14133677.

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

It can be written as a sum of positive squares in 2 ways, for example, as 40056241 + 37576900 = 6329^2 + 6130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77633141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77633098 and 77633107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77633161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1049060 + ... + 1049133.

It is an arithmetic number, because the mean of its divisors is an integer number (19932843).

Almost surely, 2^77633141 is an apocalyptic number.

It is an amenable number.

77633141 is a deficient number, since it is larger than the sum of its proper divisors (2098231).

77633141 is a wasteful number, since it uses less digits than its factorization.

77633141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098230.

The product of its digits is 10584, while the sum is 32.

The square root of 77633141 is about 8810.9670865348. The cubic root of 77633141 is about 426.5949591270.

The spelling of 77633141 in words is "seventy-seven million, six hundred thirty-three thousand, one hundred forty-one".