77066285 has 8 divisors (see below), whose sum is σ = 92530296. Its totient is φ = 61619200.

The previous prime is 77066263. The next prime is 77066291. The reversal of 77066285 is 58266077.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33953929 + 43112356 = 5827^2 + 6566^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77066285 - 2⁶ = 77066221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10385 + ... + 16185.

It is an arithmetic number, because the mean of its divisors is an integer number (11566287).

Almost surely, 2^77066285 is an apocalyptic number.

It is an amenable number.

77066285 is a deficient number, since it is larger than the sum of its proper divisors (15464011).

77066285 is a wasteful number, since it uses less digits than its factorization.

77066285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 77066285 is about 8778.7405133083. The cubic root of 77066285 is about 425.5541284070.

The spelling of 77066285 in words is "seventy-seven million, sixty-six thousand, two hundred eighty-five".