7850664 has 24 divisors (see below), whose sum is σ = 21262410. Its totient is φ = 2616864.

The previous prime is 7850663. The next prime is 7850669. The reversal of 7850664 is 4660587.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7784100 + 66564 = 2790^2 + 258^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (7850663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54447 + ... + 54590.

Almost surely, 2^7850664 is an apocalyptic number.

It is an amenable number.

7850664 is an abundant number, since it is smaller than the sum of its proper divisors (13411746).

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

7850664 is a wasteful number, since it uses less digits than its factorization.

7850664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109049 (or 109042 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 7850664 is about 2801.9036386000. The cubic root of 7850664 is about 198.7477085294.

The spelling of 7850664 in words is "seven million, eight hundred fifty thousand, six hundred sixty-four".