61117390 has 32 divisors (see below), whose sum is σ = 113477760. Its totient is φ = 23687424.

The previous prime is 61117369. The next prime is 61117391. The reversal of 61117390 is 9371116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61117391) 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, 50634 + ... + 51826.

It is an arithmetic number, because the mean of its divisors is an integer number (3546180).

Almost surely, 2^61117390 is an apocalyptic number.

61117390 is a deficient number, since it is larger than the sum of its proper divisors (52360370).

61117390 is a wasteful number, since it uses less digits than its factorization.

61117390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 61117390 is about 7817.7611884733. The cubic root of 61117390 is about 393.9020731144.

The spelling of 61117390 in words is "sixty-one million, one hundred seventeen thousand, three hundred ninety".