1687920652 has 24 divisors (see below), whose sum is σ = 3226793472. Its totient is φ = 766189200.

The previous prime is 1687920629. The next prime is 1687920719. The reversal of 1687920652 is 2560297861.

It is a super-2 number, since 2×1687920652² = 5698152254896210208, which contains 22 as substring.

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, 6877 + ... + 58507.

It is an arithmetic number, because the mean of its divisors is an integer number (134449728).

Almost surely, 2^1687920652 is an apocalyptic number.

It is an amenable number.

1687920652 is a deficient number, since it is larger than the sum of its proper divisors (1538872820).

1687920652 is a wasteful number, since it uses less digits than its factorization.

1687920652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52389 (or 52387 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 1687920652 is about 41084.3115069487. The cubic root of 1687920652 is about 1190.6497057096.

The spelling of 1687920652 in words is "one billion, six hundred eighty-seven million, nine hundred twenty thousand, six hundred fifty-two".