61867240 has 32 divisors (see below), whose sum is σ = 145255680. Its totient is φ = 23670592.

The previous prime is 61867231. The next prime is 61867277. The reversal of 61867240 is 4276816.

It is a junction number, because it is equal to n+sod(n) for n = 61867196 and 61867205.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32704 + ... + 34543.

It is an arithmetic number, because the mean of its divisors is an integer number (4539240).

Almost surely, 2^61867240 is an apocalyptic number.

It is an amenable number.

61867240 is an abundant number, since it is smaller than the sum of its proper divisors (83388440).

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

61867240 is a wasteful number, since it uses less digits than its factorization.

61867240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67281 (or 67277 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 61867240 is about 7865.5730878303. The cubic root of 61867240 is about 395.5064592564.

The spelling of 61867240 in words is "sixty-one million, eight hundred sixty-seven thousand, two hundred forty".