61432305 has 64 divisors (see below), whose sum is σ = 115105536. Its totient is φ = 27878400.

The previous prime is 61432303. The next prime is 61432361. The reversal of 61432305 is 50323416.

It is a happy number.

It is not a de Polignac number, because 61432305 - 2¹ = 61432303 is a prime.

It is a super-2 number, since 2×61432305² = 7547856195226050, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (61432303) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 339315 + ... + 339495.

It is an arithmetic number, because the mean of its divisors is an integer number (1798524).

Almost surely, 2^61432305 is an apocalyptic number.

It is an amenable number.

61432305 is a deficient number, since it is larger than the sum of its proper divisors (53673231).

61432305 is a wasteful number, since it uses less digits than its factorization.

61432305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239 (or 217 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 61432305 is about 7837.8763067555. The cubic root of 61432305 is about 394.5774576791.

Subtracting from 61432305 its reverse (50323416), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 6143 and 2305, that added together give a palindrome (8448).

The spelling of 61432305 in words is "sixty-one million, four hundred thirty-two thousand, three hundred five".