61262890 has 16 divisors (see below), whose sum is σ = 118756008. Its totient is φ = 22620096.

The previous prime is 61262843. The next prime is 61262891. The reversal of 61262890 is 9826216.

It is a happy number.

61262890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 45684081 + 15578809 = 6759^2 + 3947^2 .

It is not an unprimeable number, because it can be changed into a prime (61262891) 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 7 ways as a sum of consecutive naturals, for example, 235497 + ... + 235756.

Almost surely, 2^61262890 is an apocalyptic number.

61262890 is a deficient number, since it is larger than the sum of its proper divisors (57493118).

61262890 is a wasteful number, since it uses less digits than its factorization.

61262890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471273.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 61262890 is about 7827.0613898193. The cubic root of 61262890 is about 394.2144082827.

The spelling of 61262890 in words is "sixty-one million, two hundred sixty-two thousand, eight hundred ninety".