84069745 has 8 divisors (see below), whose sum is σ = 100973160. Its totient is φ = 67196160.

The previous prime is 84069731. The next prime is 84069757. The reversal of 84069745 is 54796048.

It can be written as a sum of positive squares in 4 ways, for example, as 53333809 + 30735936 = 7303^2 + 5544^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84069745 - 2⁷ = 84069617 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696 + ... + 12985.

It is an arithmetic number, because the mean of its divisors is an integer number (12621645).

Almost surely, 2^84069745 is an apocalyptic number.

It is an amenable number.

84069745 is a deficient number, since it is larger than the sum of its proper divisors (16903415).

84069745 is a wasteful number, since it uses less digits than its factorization.

84069745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14915.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 84069745 is about 9168.9555021278. The cubic root of 84069745 is about 438.0730906012.

The spelling of 84069745 in words is "eighty-four million, sixty-nine thousand, seven hundred forty-five".