1699952640 has 96 divisors (see below), whose sum is σ = 5438618640. Its totient is φ = 453312512.

The previous prime is 1699952633. The next prime is 1699952641. The reversal of 1699952640 is 462599961.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1699952641) 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 7 ways as a sum of consecutive naturals, for example, 3052 + ... + 58388.

Almost surely, 2^1699952640 is an apocalyptic number.

1699952640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1699952640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2719309320).

1699952640 is an abundant number, since it is smaller than the sum of its proper divisors (3738666000).

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

1699952640 is an equidigital number, since it uses as much as digits as its factorization.

1699952640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55367 (or 55347 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 51.

The square root of 1699952640 is about 41230.4819278165. The cubic root of 1699952640 is about 1193.4721088119.

The spelling of 1699952640 in words is "one billion, six hundred ninety-nine million, nine hundred fifty-two thousand, six hundred forty".