1687161336 has 48 divisors (see below), whose sum is σ = 4906544040. Its totient is φ = 482045760.

The previous prime is 1687161319. The next prime is 1687161353. The reversal of 1687161336 is 6331617861.

It is an interprime number because it is at equal distance from previous prime (1687161319) and next prime (1687161353).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 716155 + ... + 718506.

Almost surely, 2^1687161336 is an apocalyptic number.

It is an amenable number.

1687161336 is an abundant number, since it is smaller than the sum of its proper divisors (3219382704).

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

1687161336 is a wasteful number, since it uses less digits than its factorization.

1687161336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434684 (or 1434673 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 1687161336 is about 41075.0695191134. The cubic root of 1687161336 is about 1190.4711398566.

The spelling of 1687161336 in words is "one billion, six hundred eighty-seven million, one hundred sixty-one thousand, three hundred thirty-six".