61770340 has 12 divisors (see below), whose sum is σ = 129717756. Its totient is φ = 24708128.

The previous prime is 61770329. The next prime is 61770389. The reversal of 61770340 is 4307716.

61770340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 14077504 + 47692836 = 3752^2 + 6906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 61770299 and 61770308.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1544239 + ... + 1544278.

It is an arithmetic number, because the mean of its divisors is an integer number (10809813).

Almost surely, 2^61770340 is an apocalyptic number.

It is an amenable number.

61770340 is an abundant number, since it is smaller than the sum of its proper divisors (67947416).

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

61770340 is a wasteful number, since it uses less digits than its factorization.

61770340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088526 (or 3088524 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 61770340 is about 7859.4109194010. The cubic root of 61770340 is about 395.2998630996.

The spelling of 61770340 in words is "sixty-one million, seven hundred seventy thousand, three hundred forty".