61404135 has 32 divisors (see below), whose sum is σ = 110412288. Its totient is φ = 28913280.

The previous prime is 61404131. The next prime is 61404173. The reversal of 61404135 is 53140416.

It is not a de Polignac number, because 61404135 - 2² = 61404131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61404131) 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 31 ways as a sum of consecutive naturals, for example, 2361 + ... + 11330.

It is an arithmetic number, because the mean of its divisors is an integer number (3450384).

Almost surely, 2^61404135 is an apocalyptic number.

61404135 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61404135 is a deficient number, since it is larger than the sum of its proper divisors (49008153).

61404135 is a wasteful number, since it uses less digits than its factorization.

61404135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13735.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61404135 is about 7836.0790577941. The cubic root of 61404135 is about 394.5171368301.

The spelling of 61404135 in words is "sixty-one million, four hundred four thousand, one hundred thirty-five".