61694271 has 32 divisors (see below), whose sum is σ = 93808320. Its totient is φ = 40061952.

The previous prime is 61694267. The next prime is 61694317. The reversal of 61694271 is 17249616.

It is not a de Polignac number, because 61694271 - 2² = 61694267 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61694201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222585 + ... + 222861.

It is an arithmetic number, because the mean of its divisors is an integer number (2931510).

Almost surely, 2^61694271 is an apocalyptic number.

61694271 is a deficient number, since it is larger than the sum of its proper divisors (32114049).

61694271 is a wasteful number, since it uses less digits than its factorization.

61694271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472 (or 466 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 61694271 is about 7854.5700709842. The cubic root of 61694271 is about 395.1375283539.

It can be divided in two parts, 6169 and 4271, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 61694271 in words is "sixty-one million, six hundred ninety-four thousand, two hundred seventy-one".