61849970 has 32 divisors (see below), whose sum is σ = 137023488. Its totient is φ = 19574208.

The previous prime is 61849951. The next prime is 61849987. The reversal of 61849970 is 7994816.

It is a Curzon number.

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, 33074 + ... + 34893.

It is an arithmetic number, because the mean of its divisors is an integer number (4281984).

Almost surely, 2^61849970 is an apocalyptic number.

61849970 is an abundant number, since it is smaller than the sum of its proper divisors (75173518).

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

61849970 is a wasteful number, since it uses less digits than its factorization.

61849970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67994.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 61849970 is about 7864.4751891019. The cubic root of 61849970 is about 395.4696544670.

The spelling of 61849970 in words is "sixty-one million, eight hundred forty-nine thousand, nine hundred seventy".