77042285 has 8 divisors (see below), whose sum is σ = 95433216. Its totient is φ = 59645520.

The previous prime is 77042281. The next prime is 77042293. The reversal of 77042285 is 58224077.

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

It is not a de Polignac number, because 77042285 - 2² = 77042281 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77042281) 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, 248369 + ... + 248678.

It is an arithmetic number, because the mean of its divisors is an integer number (11929152).

Almost surely, 2^77042285 is an apocalyptic number.

It is an amenable number.

77042285 is a deficient number, since it is larger than the sum of its proper divisors (18390931).

77042285 is a wasteful number, since it uses less digits than its factorization.

77042285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497083.

The product of its (nonzero) digits is 31360, while the sum is 35.

The square root of 77042285 is about 8777.3734681851. The cubic root of 77042285 is about 425.5099484327.

The spelling of 77042285 in words is "seventy-seven million, forty-two thousand, two hundred eighty-five".