4920661 has 4 divisors (see below), whose sum is σ = 5079424. Its totient is φ = 4761900.

The previous prime is 4920649. The next prime is 4920683. The reversal of 4920661 is 1660294.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4920661 - 2¹⁵ = 4887893 is a prime.

It is a Duffinian number.

4920661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4920631) 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 3 ways as a sum of consecutive naturals, for example, 79335 + ... + 79396.

It is an arithmetic number, because the mean of its divisors is an integer number (1269856).

Almost surely, 2^4920661 is an apocalyptic number.

It is an amenable number.

4920661 is a deficient number, since it is larger than the sum of its proper divisors (158763).

4920661 is a wasteful number, since it uses less digits than its factorization.

4920661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158762.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 4920661 is about 2218.2562971848. The cubic root of 4920661 is about 170.0883162795.

The spelling of 4920661 in words is "four million, nine hundred twenty thousand, six hundred sixty-one".