61007285 has 4 divisors (see below), whose sum is σ = 73208748. Its totient is φ = 48805824.

The previous prime is 61007281. The next prime is 61007291. The reversal of 61007285 is 58270016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28665316 + 32341969 = 5354^2 + 5687^2 .

It is a cyclic number.

It is not a de Polignac number, because 61007285 - 2² = 61007281 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 (61007281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6100724 + ... + 6100733.

It is an arithmetic number, because the mean of its divisors is an integer number (18302187).

Almost surely, 2^61007285 is an apocalyptic number.

It is an amenable number.

61007285 is a deficient number, since it is larger than the sum of its proper divisors (12201463).

61007285 is a wasteful number, since it uses less digits than its factorization.

61007285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12201462.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 61007285 is about 7810.7160363183. The cubic root of 61007285 is about 393.6653883870.

The spelling of 61007285 in words is "sixty-one million, seven thousand, two hundred eighty-five".