61935890 has 16 divisors (see below), whose sum is σ = 111585600. Its totient is φ = 24751920.

The previous prime is 61935889. The next prime is 61935911. The reversal of 61935890 is 9853916.

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, 13061 + ... + 17159.

It is an arithmetic number, because the mean of its divisors is an integer number (6974100).

Almost surely, 2^61935890 is an apocalyptic number.

61935890 is a deficient number, since it is larger than the sum of its proper divisors (49649710).

61935890 is a wasteful number, since it uses less digits than its factorization.

61935890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5617.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 61935890 is about 7869.9358320129. The cubic root of 61935890 is about 395.6526943336.

The spelling of 61935890 in words is "sixty-one million, nine hundred thirty-five thousand, eight hundred ninety".