61389910 has 8 divisors (see below), whose sum is σ = 110501856. Its totient is φ = 24555960.

The previous prime is 61389863. The next prime is 61389929. The reversal of 61389910 is 1998316.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 61389910.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3069486 + ... + 3069505.

It is an arithmetic number, because the mean of its divisors is an integer number (13812732).

Almost surely, 2^61389910 is an apocalyptic number.

61389910 is a deficient number, since it is larger than the sum of its proper divisors (49111946).

61389910 is a wasteful number, since it uses less digits than its factorization.

61389910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6138998.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 61389910 is about 7835.1713446484. The cubic root of 61389910 is about 394.4866696110.

The spelling of 61389910 in words is "sixty-one million, three hundred eighty-nine thousand, nine hundred ten".