61326340 has 48 divisors (see below), whose sum is σ = 131725440. Its totient is φ = 23978240.

The previous prime is 61326323. The next prime is 61326341. The reversal of 61326340 is 4362316.

It is not an unprimeable number, because it can be changed into a prime (61326341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 233049 + ... + 233311.

It is an arithmetic number, because the mean of its divisors is an integer number (2744280).

Almost surely, 2^61326340 is an apocalyptic number.

It is an amenable number.

61326340 is an abundant number, since it is smaller than the sum of its proper divisors (70399100).

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

61326340 is a wasteful number, since it uses less digits than its factorization.

61326340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 61326340 is about 7831.1135862022. The cubic root of 61326340 is about 394.3504573323.

Adding to 61326340 its reverse (4362316), we get a palindrome (65688656).

The spelling of 61326340 in words is "sixty-one million, three hundred twenty-six thousand, three hundred forty".