2170678536 has 192 divisors, whose sum is σ = 6597864000. Its totient is φ = 640120320.

The previous prime is 2170678483. The next prime is 2170678589. The reversal of 2170678536 is 6358760712.

It is an interprime number because it is at equal distance from previous prime (2170678483) and next prime (2170678589).

It is a super-2 number, since 2×2170678536² = 9423690613302206592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2170678491 and 2170678500.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5727195 + ... + 5727573.

It is an arithmetic number, because the mean of its divisors is an integer number (34363875).

Almost surely, 2^2170678536 is an apocalyptic number.

2170678536 is a gapful number since it is divisible by the number (26) 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 2170678536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3298932000).

2170678536 is an abundant number, since it is smaller than the sum of its proper divisors (4427185464).

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

2170678536 is a wasteful number, since it uses less digits than its factorization.

2170678536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The square root of 2170678536 is about 46590.5412718075. The cubic root of 2170678536 is about 1294.7875176989.

The spelling of 2170678536 in words is "two billion, one hundred seventy million, six hundred seventy-eight thousand, five hundred thirty-six".