61805630 has 16 divisors (see below), whose sum is σ = 114839424. Its totient is φ = 23924640.

The previous prime is 61805629. The next prime is 61805677. The reversal of 61805630 is 3650816.

It is a junction number, because it is equal to n+sod(n) for n = 61805593 and 61805602.

It is a congruent number.

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, 99377 + ... + 99996.

It is an arithmetic number, because the mean of its divisors is an integer number (7177464).

Almost surely, 2^61805630 is an apocalyptic number.

61805630 is a deficient number, since it is larger than the sum of its proper divisors (53033794).

61805630 is a wasteful number, since it uses less digits than its factorization.

61805630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199411.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 61805630 is about 7861.6556780363. The cubic root of 61805630 is about 395.3751283288.

The spelling of 61805630 in words is "sixty-one million, eight hundred five thousand, six hundred thirty".