61443774 has 24 divisors (see below), whose sum is σ = 152146800. Its totient is φ = 17555328.

The previous prime is 61443773. The next prime is 61443799. The reversal of 61443774 is 47734416.

It is a happy number.

61443774 is a `hidden beast` number, since 614 + 4 + 37 + 7 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61443773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 243699 + ... + 243950.

It is an arithmetic number, because the mean of its divisors is an integer number (6339450).

Almost surely, 2^61443774 is an apocalyptic number.

61443774 is an abundant number, since it is smaller than the sum of its proper divisors (90703026).

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

61443774 is a wasteful number, since it uses less digits than its factorization.

61443774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487664 (or 487661 counting only the distinct ones).

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

The square root of 61443774 is about 7838.6079121232. The cubic root of 61443774 is about 394.6020111410.

The spelling of 61443774 in words is "sixty-one million, four hundred forty-three thousand, seven hundred seventy-four".