61969828 has 12 divisors (see below), whose sum is σ = 114826572. Its totient is φ = 29162240.

The previous prime is 61969813. The next prime is 61969861. The reversal of 61969828 is 82896916.

It is a happy number.

61969828 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 2 ways, for example, as 47997184 + 13972644 = 6928^2 + 3738^2 .

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 455593 + ... + 455728.

It is an arithmetic number, because the mean of its divisors is an integer number (9568881).

Almost surely, 2^61969828 is an apocalyptic number.

61969828 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

61969828 is a deficient number, since it is larger than the sum of its proper divisors (52856744).

61969828 is a wasteful number, since it uses less digits than its factorization.

61969828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911342 (or 911340 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 61969828 is about 7872.0917169454. The cubic root of 61969828 is about 395.7249475905.

The spelling of 61969828 in words is "sixty-one million, nine hundred sixty-nine thousand, eight hundred twenty-eight".