61016647 has 2 divisors, whose sum is σ = 61016648. Its totient is φ = 61016646.

The previous prime is 61016639. The next prime is 61016707. The reversal of 61016647 is 74661016.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61016647 - 2³ = 61016639 is a prime.

It is a super-2 number, since 2×61016647² = 7446062422245218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61016617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30508323 + 30508324.

It is an arithmetic number, because the mean of its divisors is an integer number (30508324).

Almost surely, 2^61016647 is an apocalyptic number.

61016647 is a deficient number, since it is larger than the sum of its proper divisors (1).

61016647 is an equidigital number, since it uses as much as digits as its factorization.

61016647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 61016647 is about 7811.3153181779. The cubic root of 61016647 is about 393.6855242711.

The spelling of 61016647 in words is "sixty-one million, sixteen thousand, six hundred forty-seven".