61747434 has 80 divisors (see below), whose sum is σ = 167479488. Its totient is φ = 16599168.

The previous prime is 61747429. The next prime is 61747457. The reversal of 61747434 is 43474716.

It is a happy number.

61747434 is a `hidden beast` number, since 617 + 4 + 7 + 4 + 34 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17677 + ... + 20879.

Almost surely, 2^61747434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61747434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83739744).

61747434 is an abundant number, since it is smaller than the sum of its proper divisors (105732054).

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

61747434 is a wasteful number, since it uses less digits than its factorization.

61747434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3241 (or 3232 counting only the distinct ones).

The product of its digits is 56448, while the sum is 36.

The square root of 61747434 is about 7857.9535503845. The cubic root of 61747434 is about 395.2509946722.

The spelling of 61747434 in words is "sixty-one million, seven hundred forty-seven thousand, four hundred thirty-four".