61743897 has 16 divisors (see below), whose sum is σ = 91656000. Its totient is φ = 41080032.

The previous prime is 61743893. The next prime is 61743919. The reversal of 61743897 is 79834716.

61743897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61743897 - 2² = 61743893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61743893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13354 + ... + 17372.

It is an arithmetic number, because the mean of its divisors is an integer number (5728500).

Almost surely, 2^61743897 is an apocalyptic number.

It is an amenable number.

61743897 is a deficient number, since it is larger than the sum of its proper divisors (29912103).

61743897 is a wasteful number, since it uses less digits than its factorization.

61743897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4597 (or 4591 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 61743897 is about 7857.7284885646. The cubic root of 61743897 is about 395.2434476408.

The spelling of 61743897 in words is "sixty-one million, seven hundred forty-three thousand, eight hundred ninety-seven".