61894741 has 2 divisors, whose sum is σ = 61894742. Its totient is φ = 61894740.

The previous prime is 61894711. The next prime is 61894823. The reversal of 61894741 is 14749816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56700900 + 5193841 = 7530^2 + 2279^2 .

It is a cyclic number.

It is not a de Polignac number, because 61894741 - 2²¹ = 59797589 is a prime.

It is a super-3 number, since 3×61894741³ (a number of 24 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 61894694 and 61894703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61894711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30947370 + 30947371.

It is an arithmetic number, because the mean of its divisors is an integer number (30947371).

Almost surely, 2^61894741 is an apocalyptic number.

It is an amenable number.

61894741 is a deficient number, since it is larger than the sum of its proper divisors (1).

61894741 is an equidigital number, since it uses as much as digits as its factorization.

61894741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 61894741 is about 7867.3210815372. The cubic root of 61894741 is about 395.5650536050.

It can be divided in two parts, 618 and 94741, that added together give a palindrome (95359).

The spelling of 61894741 in words is "sixty-one million, eight hundred ninety-four thousand, seven hundred forty-one".