61816461 has 8 divisors (see below), whose sum is σ = 94196544. Its totient is φ = 35323680.

The previous prime is 61816457. The next prime is 61816477. The reversal of 61816461 is 16461816.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 61816461 - 2² = 61816457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61816061) 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, 1471800 + ... + 1471841.

It is an arithmetic number, because the mean of its divisors is an integer number (11774568).

Almost surely, 2^61816461 is an apocalyptic number.

It is an amenable number.

61816461 is a deficient number, since it is larger than the sum of its proper divisors (32380083).

61816461 is a wasteful number, since it uses less digits than its factorization.

61816461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943651.

The product of its digits is 6912, while the sum is 33.

The square root of 61816461 is about 7862.3444976673. The cubic root of 61816461 is about 395.3982225458.

The spelling of 61816461 in words is "sixty-one million, eight hundred sixteen thousand, four hundred sixty-one".