61432405 has 8 divisors (see below), whose sum is σ = 73783512. Its totient is φ = 49102848.

The previous prime is 61432369. The next prime is 61432409. The reversal of 61432405 is 50423416.

61432405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 43335889 + 18096516 = 6583^2 + 4254^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 61432405 - 2¹⁷ = 61301333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61432405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61432409) 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 7 ways as a sum of consecutive naturals, for example, 1749 + ... + 11221.

It is an arithmetic number, because the mean of its divisors is an integer number (9222939).

Almost surely, 2^61432405 is an apocalyptic number.

It is an amenable number.

61432405 is a deficient number, since it is larger than the sum of its proper divisors (12351107).

61432405 is a wasteful number, since it uses less digits than its factorization.

61432405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10775.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 61432405 is about 7837.8826860320. The cubic root of 61432405 is about 394.5776717778.

The spelling of 61432405 in words is "sixty-one million, four hundred thirty-two thousand, four hundred five".