61403810 has 32 divisors (see below), whose sum is σ = 119472192. Its totient is φ = 22587840.

The previous prime is 61403809. The next prime is 61403819. The reversal of 61403810 is 1830416.

61403810 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61403810² = 7540855765032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61403819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42317 + ... + 43743.

It is an arithmetic number, because the mean of its divisors is an integer number (3733506).

Almost surely, 2^61403810 is an apocalyptic number.

61403810 is a deficient number, since it is larger than the sum of its proper divisors (58068382).

61403810 is a wasteful number, since it uses less digits than its factorization.

61403810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 61403810 is about 7836.0583203547. The cubic root of 61403810 is about 394.5164407950.

The spelling of 61403810 in words is "sixty-one million, four hundred three thousand, eight hundred ten".