61354940 has 12 divisors (see below), whose sum is σ = 128845416. Its totient is φ = 24541968.

The previous prime is 61354919. The next prime is 61354949. The reversal of 61354940 is 4945316.

It is a junction number, because it is equal to n+sod(n) for n = 61354897 and 61354906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61354949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533854 + ... + 1533893.

It is an arithmetic number, because the mean of its divisors is an integer number (10737118).

Almost surely, 2^61354940 is an apocalyptic number.

It is an amenable number.

61354940 is an abundant number, since it is smaller than the sum of its proper divisors (67490476).

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

61354940 is a wasteful number, since it uses less digits than its factorization.

61354940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3067756 (or 3067754 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 61354940 is about 7832.9394227199. The cubic root of 61354940 is about 394.4117505726.

The spelling of 61354940 in words is "sixty-one million, three hundred fifty-four thousand, nine hundred forty".