61744340 has 48 divisors (see below), whose sum is σ = 156909312. Its totient is φ = 19923456.

The previous prime is 61744339. The next prime is 61744399. The reversal of 61744340 is 4344716.

61744340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10592 + ... + 15351.

It is an arithmetic number, because the mean of its divisors is an integer number (3268944).

Almost surely, 2^61744340 is an apocalyptic number.

It is an amenable number.

61744340 is an abundant number, since it is smaller than the sum of its proper divisors (95164972).

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

61744340 is a wasteful number, since it uses less digits than its factorization.

61744340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25976 (or 25974 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 61744340 is about 7857.7566773221. The cubic root of 61744340 is about 395.2443929025.

The spelling of 61744340 in words is "sixty-one million, seven hundred forty-four thousand, three hundred forty".