61699941 has 16 divisors (see below), whose sum is σ = 91528320. Its totient is φ = 41078880.

The previous prime is 61699927. The next prime is 61699949. The reversal of 61699941 is 14999616.

It is not a de Polignac number, because 61699941 - 2⁵ = 61699909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61699949) 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 15 ways as a sum of consecutive naturals, for example, 39216 + ... + 40758.

It is an arithmetic number, because the mean of its divisors is an integer number (5720520).

Almost surely, 2^61699941 is an apocalyptic number.

It is an amenable number.

61699941 is a deficient number, since it is larger than the sum of its proper divisors (29828379).

61699941 is a wasteful number, since it uses less digits than its factorization.

61699941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033 (or 3027 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 61699941 is about 7854.9309990604. The cubic root of 61699941 is about 395.1496329957.

It can be divided in two parts, 6169 and 9941, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 61699941 in words is "sixty-one million, six hundred ninety-nine thousand, nine hundred forty-one".