4657986 has 20 divisors (see below), whose sum is σ = 10437702. Its totient is φ = 1552608.

The previous prime is 4657981. The next prime is 4657987. The reversal of 4657986 is 6897564.

It can be written as a sum of positive squares in only one way, i.e., 2954961 + 1703025 = 1719^2 + 1305^2 .

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4657981) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 14215 + ... + 14538.

Almost surely, 2^4657986 is an apocalyptic number.

4657986 is an abundant number, since it is smaller than the sum of its proper divisors (5779716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4657986 is a wasteful number, since it uses less digits than its factorization.

4657986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28767 (or 28758 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 4657986 is about 2158.2367803371. The cubic root of 4657986 is about 167.0062507371.

It can be divided in two parts, 46579 and 86, that added together give a triangular number (46665 = T₃₀₅).

The spelling of 4657986 in words is "four million, six hundred fifty-seven thousand, nine hundred eighty-six".