61074905 has 4 divisors (see below), whose sum is σ = 73289892. Its totient is φ = 48859920.

The previous prime is 61074889. The next prime is 61074919. The reversal of 61074905 is 50947016.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40208281 + 20866624 = 6341^2 + 4568^2 .

It is not a de Polignac number, because 61074905 - 2⁴ = 61074889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 6107486 + ... + 6107495.

It is an arithmetic number, because the mean of its divisors is an integer number (18322473).

Almost surely, 2^61074905 is an apocalyptic number.

It is an amenable number.

61074905 is a deficient number, since it is larger than the sum of its proper divisors (12214987).

61074905 is a wasteful number, since it uses less digits than its factorization.

61074905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12214986.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 61074905 is about 7815.0435059570. The cubic root of 61074905 is about 393.8107799010.

The spelling of 61074905 in words is "sixty-one million, seventy-four thousand, nine hundred five".