84738690 has 64 divisors (see below), whose sum is σ = 226972800. Its totient is φ = 22496832.

The previous prime is 84738673. The next prime is 84738707. The reversal of 84738690 is 9683748.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (84738673) and next prime (84738707).

It is a super-2 number, since 2×84738690² = 14361291165832200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75856 + ... + 76964.

It is an arithmetic number, because the mean of its divisors is an integer number (3546450).

Almost surely, 2^84738690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84738690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113486400).

84738690 is an abundant number, since it is smaller than the sum of its proper divisors (142234110).

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

84738690 is a wasteful number, since it uses less digits than its factorization.

84738690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408 (or 1402 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 84738690 is about 9205.3620243856. The cubic root of 84738690 is about 439.2319417481.

The spelling of 84738690 in words is "eighty-four million, seven hundred thirty-eight thousand, six hundred ninety".