61697941 has 4 divisors (see below), whose sum is σ = 61716384. Its totient is φ = 61679500.

The previous prime is 61697929. The next prime is 61697953. The reversal of 61697941 is 14979616.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61697929) and next prime (61697953).

It is a cyclic number.

It is not a de Polignac number, because 61697941 - 2¹⁹ = 61173653 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 (61691941) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2635 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (15429096).

Almost surely, 2^61697941 is an apocalyptic number.

It is an amenable number.

61697941 is a deficient number, since it is larger than the sum of its proper divisors (18443).

61697941 is a wasteful number, since it uses less digits than its factorization.

61697941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18442.

The product of its digits is 81648, while the sum is 43.

The square root of 61697941 is about 7854.8036894629. The cubic root of 61697941 is about 395.1453633654.

The spelling of 61697941 in words is "sixty-one million, six hundred ninety-seven thousand, nine hundred forty-one".