61646804 has 12 divisors (see below), whose sum is σ = 108092628. Its totient is φ = 30763200.

The previous prime is 61646801. The next prime is 61646833. The reversal of 61646804 is 40864616.

It can be written as a sum of positive squares in 2 ways, for example, as 31922500 + 29724304 = 5650^2 + 5452^2 .

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61646801) 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, 12707 + ... + 16874.

It is an arithmetic number, because the mean of its divisors is an integer number (9007719).

Almost surely, 2^61646804 is an apocalyptic number.

It is an amenable number.

61646804 is a deficient number, since it is larger than the sum of its proper divisors (46445824).

61646804 is a wasteful number, since it uses less digits than its factorization.

61646804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30106 (or 30104 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 61646804 is about 7851.5478728719. The cubic root of 61646804 is about 395.0361639698.

The spelling of 61646804 in words is "sixty-one million, six hundred forty-six thousand, eight hundred four".