61138330 has 32 divisors (see below), whose sum is σ = 121264128. Its totient is φ = 22008000.

The previous prime is 61138327. The next prime is 61138367. The reversal of 61138330 is 3383116.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 61138295 and 61138304.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8359 + ... + 13861.

It is an arithmetic number, because the mean of its divisors is an integer number (3789504).

Almost surely, 2^61138330 is an apocalyptic number.

61138330 is a deficient number, since it is larger than the sum of its proper divisors (60125798).

61138330 is a wasteful number, since it uses less digits than its factorization.

61138330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5622.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 61138330 is about 7819.1003318796. The cubic root of 61138330 is about 393.9470541341.

The spelling of 61138330 in words is "sixty-one million, one hundred thirty-eight thousand, three hundred thirty".