61615741 has 6 divisors (see below), whose sum is σ = 67726526. Its totient is φ = 56014200.

The previous prime is 61615711. The next prime is 61615753. The reversal of 61615741 is 14751616.

It can be written as a sum of positive squares in only one way, i.e., 31967716 + 29648025 = 5654^2 + 5445^2 .

It is not a de Polignac number, because 61615741 - 2¹⁵ = 61582973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61615711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 254490 + ... + 254731.

Almost surely, 2^61615741 is an apocalyptic number.

It is an amenable number.

61615741 is a deficient number, since it is larger than the sum of its proper divisors (6110785).

61615741 is a wasteful number, since it uses less digits than its factorization.

61615741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509243 (or 509232 counting only the distinct ones).

The product of its digits is 5040, while the sum is 31.

The square root of 61615741 is about 7849.5694786402. The cubic root of 61615741 is about 394.9698016758.

The spelling of 61615741 in words is "sixty-one million, six hundred fifteen thousand, seven hundred forty-one".