61432340 has 12 divisors (see below), whose sum is σ = 129007956. Its totient is φ = 24572928.

The previous prime is 61432303. The next prime is 61432361. The reversal of 61432340 is 4323416.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12376324 + 49056016 = 3518^2 + 7004^2 .

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1535789 + ... + 1535828.

It is an arithmetic number, because the mean of its divisors is an integer number (10750663).

Almost surely, 2^61432340 is an apocalyptic number.

It is an amenable number.

61432340 is an abundant number, since it is smaller than the sum of its proper divisors (67575616).

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

61432340 is a wasteful number, since it uses less digits than its factorization.

61432340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3071626 (or 3071624 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 61432340 is about 7837.8785395029. The cubic root of 61432340 is about 394.5775326137.

Adding to 61432340 its reverse (4323416), we get a palindrome (65755756).

The spelling of 61432340 in words is "sixty-one million, four hundred thirty-two thousand, three hundred forty".