61200340 has 24 divisors (see below), whose sum is σ = 136081512. Its totient is φ = 23040000.

The previous prime is 61200313. The next prime is 61200361. The reversal of 61200340 is 4300216.

It can be written as a sum of positive squares in 4 ways, for example, as 33131536 + 28068804 = 5756^2 + 5298^2 .

It is a super-2 number, since 2×61200340² = 7490963232231200, which contains 22 as substring.

It is a congruent number.

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, 89661 + ... + 90340.

It is an arithmetic number, because the mean of its divisors is an integer number (5670063).

Almost surely, 2^61200340 is an apocalyptic number.

It is an amenable number.

61200340 is an abundant number, since it is smaller than the sum of its proper divisors (74881172).

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

61200340 is a wasteful number, since it uses less digits than its factorization.

61200340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180027 (or 180025 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 61200340 is about 7823.0646168877. The cubic root of 61200340 is about 394.0801970277.

Adding to 61200340 its reverse (4300216), we get a palindrome (65500556).

The spelling of 61200340 in words is "sixty-one million, two hundred thousand, three hundred forty".