61897648 has 20 divisors (see below), whose sum is σ = 121117248. Its totient is φ = 30641600.

The previous prime is 61897639. The next prime is 61897699. The reversal of 61897648 is 84679816.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17536 + ... + 20767.

Almost surely, 2^61897648 is an apocalyptic number.

It is an amenable number.

61897648 is a deficient number, since it is larger than the sum of its proper divisors (59219600).

61897648 is a wasteful number, since it uses less digits than its factorization.

61897648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38412 (or 38406 counting only the distinct ones).

The product of its digits is 580608, while the sum is 49.

The square root of 61897648 is about 7867.5058309480. The cubic root of 61897648 is about 395.5712463208.

The spelling of 61897648 in words is "sixty-one million, eight hundred ninety-seven thousand, six hundred forty-eight".