61408803 has 4 divisors (see below), whose sum is σ = 81878408. Its totient is φ = 40939200.

The previous prime is 61408801. The next prime is 61408829. The reversal of 61408803 is 30880416.

It is a happy number.

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

It is not a de Polignac number, because 61408803 - 2¹ = 61408801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61408801) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10234798 + ... + 10234803.

It is an arithmetic number, because the mean of its divisors is an integer number (20469602).

Almost surely, 2^61408803 is an apocalyptic number.

61408803 is a deficient number, since it is larger than the sum of its proper divisors (20469605).

61408803 is a wasteful number, since it uses less digits than its factorization.

61408803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20469604.

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 61408803 is about 7836.3769051775. The cubic root of 61408803 is about 394.5271337645.

The spelling of 61408803 in words is "sixty-one million, four hundred eight thousand, eight hundred three".