77870223 has 12 divisors (see below), whose sum is σ = 112701888. Its totient is φ = 51810720.

The previous prime is 77870207. The next prime is 77870257. The reversal of 77870223 is 32207877.

It is not a de Polignac number, because 77870223 - 2⁴ = 77870207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77870123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3615 + ... + 12992.

It is an arithmetic number, because the mean of its divisors is an integer number (9391824).

Almost surely, 2^77870223 is an apocalyptic number.

77870223 is a deficient number, since it is larger than the sum of its proper divisors (34831665).

77870223 is a wasteful number, since it uses less digits than its factorization.

77870223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17134 (or 17131 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 36.

The square root of 77870223 is about 8824.4106318779. The cubic root of 77870223 is about 427.0287738820.

The spelling of 77870223 in words is "seventy-seven million, eight hundred seventy thousand, two hundred twenty-three".