61889297 has 6 divisors (see below), whose sum is σ = 64697682. Its totient is φ = 59197952.

The previous prime is 61889293. The next prime is 61889357. The reversal of 61889297 is 79298816.

It can be written as a sum of positive squares in only one way, i.e., 56911936 + 4977361 = 7544^2 + 2231^2 .

It is not a de Polignac number, because 61889297 - 2² = 61889293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61889293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57968 + ... + 59025.

It is an arithmetic number, because the mean of its divisors is an integer number (10782947).

Almost surely, 2^61889297 is an apocalyptic number.

It is an amenable number.

61889297 is a deficient number, since it is larger than the sum of its proper divisors (2808385).

61889297 is a wasteful number, since it uses less digits than its factorization.

61889297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117039 (or 117016 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 61889297 is about 7866.9750857620. The cubic root of 61889297 is about 395.5534558545.

The spelling of 61889297 in words is "sixty-one million, eight hundred eighty-nine thousand, two hundred ninety-seven".