4656991 has 4 divisors (see below), whose sum is σ = 4687984. Its totient is φ = 4626000.

The previous prime is 4656989. The next prime is 4657001. The reversal of 4656991 is 1996564.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4656991 - 2¹ = 4656989 is a prime.

It is a Duffinian number.

4656991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4606991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15270 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (1171996).

Almost surely, 2^4656991 is an apocalyptic number.

4656991 is a deficient number, since it is larger than the sum of its proper divisors (30993).

4656991 is a wasteful number, since it uses less digits than its factorization.

4656991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30992.

The product of its digits is 58320, while the sum is 40.

The square root of 4656991 is about 2158.0062557833. The cubic root of 4656991 is about 166.9943583976.

The spelling of 4656991 in words is "four million, six hundred fifty-six thousand, nine hundred ninety-one".