77066441 has 4 divisors (see below), whose sum is σ = 77088384. Its totient is φ = 77044500.

The previous prime is 77066401. The next prime is 77066447. The reversal of 77066441 is 14466077.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77066441 - 2⁶ = 77066377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77066447) 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, 4385 + ... + 13166.

It is an arithmetic number, because the mean of its divisors is an integer number (19272096).

Almost surely, 2^77066441 is an apocalyptic number.

It is an amenable number.

77066441 is a deficient number, since it is larger than the sum of its proper divisors (21943).

77066441 is a wasteful number, since it uses less digits than its factorization.

77066441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21942.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 77066441 is about 8778.7493984052. The cubic root of 77066441 is about 425.5544155468.

The spelling of 77066441 in words is "seventy-seven million, sixty-six thousand, four hundred forty-one".