61687295 has 8 divisors (see below), whose sum is σ = 74469024. Its totient is φ = 49053664.

The previous prime is 61687291. The next prime is 61687313. The reversal of 61687295 is 59278616.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61687295 - 2² = 61687291 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 (61687291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36104 + ... + 37773.

It is an arithmetic number, because the mean of its divisors is an integer number (9308628).

Almost surely, 2^61687295 is an apocalyptic number.

61687295 is a deficient number, since it is larger than the sum of its proper divisors (12781729).

61687295 is a wasteful number, since it uses less digits than its factorization.

61687295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74049.

The product of its digits is 181440, while the sum is 44.

The square root of 61687295 is about 7854.1259857479. The cubic root of 61687295 is about 395.1226345707.

The spelling of 61687295 in words is "sixty-one million, six hundred eighty-seven thousand, two hundred ninety-five".