61540968 has 16 divisors (see below), whose sum is σ = 153852480. Its totient is φ = 20513648.

The previous prime is 61540951. The next prime is 61540993. The reversal of 61540968 is 86904516.

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, 1282080 + ... + 1282127.

It is an arithmetic number, because the mean of its divisors is an integer number (9615780).

Almost surely, 2^61540968 is an apocalyptic number.

It is an amenable number.

61540968 is an abundant number, since it is smaller than the sum of its proper divisors (92311512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61540968 is a wasteful number, since it uses less digits than its factorization.

61540968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564216 (or 2564212 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 61540968 is about 7844.8051601044. The cubic root of 61540968 is about 394.8099668075.

The spelling of 61540968 in words is "sixty-one million, five hundred forty thousand, nine hundred sixty-eight".