61405946 has 16 divisors (see below), whose sum is σ = 107835840. Its totient is φ = 25674720.

The previous prime is 61405943. The next prime is 61405951. The reversal of 61405946 is 64950416.

It is not an unprimeable number, because it can be changed into a prime (61405943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52916 + ... + 54063.

It is an arithmetic number, because the mean of its divisors is an integer number (6739740).

Almost surely, 2^61405946 is an apocalyptic number.

61405946 is a deficient number, since it is larger than the sum of its proper divisors (46429894).

61405946 is a wasteful number, since it uses less digits than its factorization.

61405946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107029.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 61405946 is about 7836.1946121826. The cubic root of 61405946 is about 394.5210153067.

The spelling of 61405946 in words is "sixty-one million, four hundred five thousand, nine hundred forty-six".