61786442 has 16 divisors (see below), whose sum is σ = 99828960. Its totient is φ = 28585872.

The previous prime is 61786433. The next prime is 61786469. The reversal of 61786442 is 24468716.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 61786396 and 61786405.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17273 + ... + 20540.

It is an arithmetic number, because the mean of its divisors is an integer number (6239310).

Almost surely, 2^61786442 is an apocalyptic number.

61786442 is a deficient number, since it is larger than the sum of its proper divisors (38042518).

61786442 is a wasteful number, since it uses less digits than its factorization.

61786442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37877.

The product of its digits is 64512, while the sum is 38.

The square root of 61786442 is about 7860.4352296804. The cubic root of 61786442 is about 395.3342084149.

The spelling of 61786442 in words is "sixty-one million, seven hundred eighty-six thousand, four hundred forty-two".