61896740 has 24 divisors (see below), whose sum is σ = 131180280. Its totient is φ = 24530688.

The previous prime is 61896733. The next prime is 61896827. The reversal of 61896740 is 4769816.

It can be written as a sum of positive squares in 4 ways, for example, as 28047616 + 33849124 = 5296^2 + 5818^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12017 + ... + 16376.

It is an arithmetic number, because the mean of its divisors is an integer number (5465845).

Almost surely, 2^61896740 is an apocalyptic number.

It is an amenable number.

61896740 is an abundant number, since it is smaller than the sum of its proper divisors (69283540).

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

61896740 is a wasteful number, since it uses less digits than its factorization.

61896740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28511 (or 28509 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 61896740 is about 7867.4481250276. The cubic root of 61896740 is about 395.5693120499.

The spelling of 61896740 in words is "sixty-one million, eight hundred ninety-six thousand, seven hundred forty".