77890485 has 8 divisors (see below), whose sum is σ = 124624800. Its totient is φ = 41541584.

The previous prime is 77890471. The next prime is 77890499. The reversal of 77890485 is 58409877.

It is an interprime number because it is at equal distance from previous prime (77890471) and next prime (77890499).

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

It is a cyclic number.

It is not a de Polignac number, because 77890485 - 2⁴ = 77890469 is a prime.

It is a Curzon 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, 2596335 + ... + 2596364.

It is an arithmetic number, because the mean of its divisors is an integer number (15578100).

Almost surely, 2^77890485 is an apocalyptic number.

It is an amenable number.

77890485 is a deficient number, since it is larger than the sum of its proper divisors (46734315).

77890485 is a wasteful number, since it uses less digits than its factorization.

77890485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5192707.

The product of its (nonzero) digits is 564480, while the sum is 48.

The square root of 77890485 is about 8825.5586225462. The cubic root of 77890485 is about 427.0658086060.

The spelling of 77890485 in words is "seventy-seven million, eight hundred ninety thousand, four hundred eighty-five".