61864794 has 12 divisors (see below), whose sum is σ = 134040426. Its totient is φ = 20621592.

The previous prime is 61864793. The next prime is 61864837. The reversal of 61864794 is 49746816.

It can be written as a sum of positive squares in only one way, i.e., 61826769 + 38025 = 7863^2 + 195^2 .

It is not an unprimeable number, because it can be changed into a prime (61864793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1718449 + ... + 1718484.

Almost surely, 2^61864794 is an apocalyptic number.

61864794 is an abundant number, since it is smaller than the sum of its proper divisors (72175632).

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

61864794 is a wasteful number, since it uses less digits than its factorization.

61864794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436941 (or 3436938 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 61864794 is about 7865.4175985767. The cubic root of 61864794 is about 395.5012469041.

The spelling of 61864794 in words is "sixty-one million, eight hundred sixty-four thousand, seven hundred ninety-four".