61642330 has 32 divisors (see below), whose sum is σ = 113742720. Its totient is φ = 24045120.

The previous prime is 61642319. The next prime is 61642331. The reversal of 61642330 is 3324616.

It is a junction number, because it is equal to n+sod(n) for n = 61642295 and 61642304.

It is not an unprimeable number, because it can be changed into a prime (61642331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84427 + ... + 85153.

It is an arithmetic number, because the mean of its divisors is an integer number (3554460).

Almost surely, 2^61642330 is an apocalyptic number.

61642330 is a deficient number, since it is larger than the sum of its proper divisors (52100390).

61642330 is a wasteful number, since it uses less digits than its factorization.

61642330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934.

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

The square root of 61642330 is about 7851.2629557288. The cubic root of 61642330 is about 395.0266071913.

Adding to 61642330 its reverse (3324616), we get a palindrome (64966946).

It can be divided in two parts, 6164 and 2330, that multiplied together give a triangular number (14362120 = T₅₃₅₉).

The spelling of 61642330 in words is "sixty-one million, six hundred forty-two thousand, three hundred thirty".