999695580 has 192 divisors, whose sum is σ = 3104320128. Its totient is φ = 238878720.

The previous prime is 999695573. The next prime is 999695597. The reversal of 999695580 is 85596999.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5523090 + ... + 5523270.

It is an arithmetic number, because the mean of its divisors is an integer number (16168334).

Almost surely, 2^999695580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 999695580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1552160064).

999695580 is an abundant number, since it is smaller than the sum of its proper divisors (2104624548).

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

999695580 is a wasteful number, since it uses less digits than its factorization.

999695580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 7873200, while the sum is 60.

The square root of 999695580 is about 31617.9629324851. The cubic root of 999695580 is about 999.8985163681.

The spelling of 999695580 in words is "nine hundred ninety-nine million, six hundred ninety-five thousand, five hundred eighty".