84701990 has 32 divisors (see below), whose sum is σ = 164882304. Its totient is φ = 31206400.

The previous prime is 84701987. The next prime is 84701999. The reversal of 84701990 is 9910748.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84701999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2690 + ... + 13290.

It is an arithmetic number, because the mean of its divisors is an integer number (5152572).

Almost surely, 2^84701990 is an apocalyptic number.

84701990 is a deficient number, since it is larger than the sum of its proper divisors (80180314).

84701990 is a wasteful number, since it uses less digits than its factorization.

84701990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 84701990 is about 9203.3684051004. The cubic root of 84701990 is about 439.1685227047.

The spelling of 84701990 in words is "eighty-four million, seven hundred one thousand, nine hundred ninety".