61797285 has 48 divisors (see below), whose sum is σ = 117868608. Its totient is φ = 29702400.

The previous prime is 61797271. The next prime is 61797313. The reversal of 61797285 is 58279716.

61797285 is a `hidden beast` number, since 617 + 9 + 7 + 28 + 5 = 666.

It is not a de Polignac number, because 61797285 - 2⁴ = 61797269 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 61797285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 64369 + ... + 65321.

It is an arithmetic number, because the mean of its divisors is an integer number (2455596).

Almost surely, 2^61797285 is an apocalyptic number.

It is an amenable number.

61797285 is a deficient number, since it is larger than the sum of its proper divisors (56071323).

61797285 is a wasteful number, since it uses less digits than its factorization.

61797285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106 (or 1103 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 61797285 is about 7861.1249195010. The cubic root of 61797285 is about 395.3573330031.

The spelling of 61797285 in words is "sixty-one million, seven hundred ninety-seven thousand, two hundred eighty-five".