61236971 has 4 divisors (see below), whose sum is σ = 63899472. Its totient is φ = 58574472.

The previous prime is 61236953. The next prime is 61236977. The reversal of 61236971 is 17963216.

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

It is a cyclic number.

It is not a de Polignac number, because 61236971 - 2¹⁰ = 61235947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61236977) 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, 1331216 + ... + 1331261.

It is an arithmetic number, because the mean of its divisors is an integer number (15974868).

Almost surely, 2^61236971 is an apocalyptic number.

61236971 is a deficient number, since it is larger than the sum of its proper divisors (2662501).

61236971 is a wasteful number, since it uses less digits than its factorization.

61236971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662500.

The product of its digits is 13608, while the sum is 35.

The square root of 61236971 is about 7825.4054847017. The cubic root of 61236971 is about 394.1588059186.

The spelling of 61236971 in words is "sixty-one million, two hundred thirty-six thousand, nine hundred seventy-one".