61540358 has 12 divisors (see below), whose sum is σ = 101465700. Its totient is φ = 27972780.

The previous prime is 61540351. The next prime is 61540403. The reversal of 61540358 is 85304516.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61540351) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126908 + ... + 127391.

It is an arithmetic number, because the mean of its divisors is an integer number (8455475).

Almost surely, 2^61540358 is an apocalyptic number.

61540358 is a deficient number, since it is larger than the sum of its proper divisors (39925342).

61540358 is a wasteful number, since it uses less digits than its factorization.

61540358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254323 (or 254312 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 61540358 is about 7844.7662807760. The cubic root of 61540358 is about 394.8086623384.

The spelling of 61540358 in words is "sixty-one million, five hundred forty thousand, three hundred fifty-eight".