61405434 has 24 divisors (see below), whose sum is σ = 133635060. Its totient is φ = 20377728.

The previous prime is 61405417. The next prime is 61405447. The reversal of 61405434 is 43450416.

61405434 is a `hidden beast` number, since 614 + 0 + 5 + 43 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46172025 + 15233409 = 6795^2 + 3903^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61405398 and 61405407.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3327 + ... + 11570.

Almost surely, 2^61405434 is an apocalyptic number.

61405434 is an abundant number, since it is smaller than the sum of its proper divisors (72229626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61405434 is a wasteful number, since it uses less digits than its factorization.

61405434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15134 (or 15131 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 61405434 is about 7836.1619431964. The cubic root of 61405434 is about 394.5199188042.

The spelling of 61405434 in words is "sixty-one million, four hundred five thousand, four hundred thirty-four".