4640261566 has 4 divisors (see below), whose sum is σ = 6960392352. Its totient is φ = 2320130782.

The previous prime is 4640261497. The next prime is 4640261597. The reversal of 4640261566 is 6651620464.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160065390 + ... + 1160065393.

It is an arithmetic number, because the mean of its divisors is an integer number (1740098088).

Almost surely, 2^4640261566 is an apocalyptic number.

4640261566 is a deficient number, since it is larger than the sum of its proper divisors (2320130786).

4640261566 is a wasteful number, since it uses less digits than its factorization.

4640261566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320130785.

The product of its (nonzero) digits is 207360, while the sum is 40.

The square root of 4640261566 is about 68119.4653971976. The cubic root of 4640261566 is about 1667.9415236263.

The spelling of 4640261566 in words is "four billion, six hundred forty million, two hundred sixty-one thousand, five hundred sixty-six".