61869590 has 8 divisors (see below), whose sum is σ = 111365280. Its totient is φ = 24747832.

The previous prime is 61869589. The next prime is 61869593. The reversal of 61869590 is 9596816.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61869593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3093470 + ... + 3093489.

It is an arithmetic number, because the mean of its divisors is an integer number (13920660).

Almost surely, 2^61869590 is an apocalyptic number.

61869590 is a deficient number, since it is larger than the sum of its proper divisors (49495690).

61869590 is a wasteful number, since it uses less digits than its factorization.

61869590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6186966.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 61869590 is about 7865.7224715852. The cubic root of 61869590 is about 395.5114669062.

The spelling of 61869590 in words is "sixty-one million, eight hundred sixty-nine thousand, five hundred ninety".