1687214802 has 64 divisors (see below), whose sum is σ = 4159733760. Its totient is φ = 444273984.

The previous prime is 1687214791. The next prime is 1687214803. The reversal of 1687214802 is 2084127861.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1687214803) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 403599 + ... + 407757.

It is an arithmetic number, because the mean of its divisors is an integer number (64995840).

Almost surely, 2^1687214802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1687214802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2079866880).

1687214802 is an abundant number, since it is smaller than the sum of its proper divisors (2472518958).

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

1687214802 is a wasteful number, since it uses less digits than its factorization.

1687214802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4927.

The product of its (nonzero) digits is 43008, while the sum is 39.

The square root of 1687214802 is about 41075.7203466963. The cubic root of 1687214802 is about 1190.4837150336.

The spelling of 1687214802 in words is "one billion, six hundred eighty-seven million, two hundred fourteen thousand, eight hundred two".