61789497 has 24 divisors (see below), whose sum is σ = 103497408. Its totient is φ = 32097120.

The previous prime is 61789493. The next prime is 61789549. The reversal of 61789497 is 79498716.

It is not a de Polignac number, because 61789497 - 2² = 61789493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61789493) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9618 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (4312392).

Almost surely, 2^61789497 is an apocalyptic number.

It is an amenable number.

61789497 is a deficient number, since it is larger than the sum of its proper divisors (41707911).

61789497 is a wasteful number, since it uses less digits than its factorization.

61789497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24349 (or 24338 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 61789497 is about 7860.6295549402. The cubic root of 61789497 is about 395.3407240088.

The spelling of 61789497 in words is "sixty-one million, seven hundred eighty-nine thousand, four hundred ninety-seven".