4661987 has 8 divisors (see below), whose sum is σ = 5210352. Its totient is φ = 4134400.

The previous prime is 4661983. The next prime is 4661989. The reversal of 4661987 is 7891664.

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 4661987 - 2² = 4661983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (4661983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4718 + ... + 5619.

It is an arithmetic number, because the mean of its divisors is an integer number (651294).

Almost surely, 2^4661987 is an apocalyptic number.

4661987 is a deficient number, since it is larger than the sum of its proper divisors (548365).

4661987 is a wasteful number, since it uses less digits than its factorization.

4661987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10389.

The product of its digits is 72576, while the sum is 41.

The square root of 4661987 is about 2159.1634954306. The cubic root of 4661987 is about 167.0540539998.

The spelling of 4661987 in words is "four million, six hundred sixty-one thousand, nine hundred eighty-seven".