90705661698304 has 27 divisors (see below), whose sum is σ = 181057308577327. Its totient is φ = 45352754657536.

The previous prime is 90705661698241. The next prime is 90705661698313. The reversal of 90705661698304 is 40389616650709.

The square root of 90705661698304 is 9523952.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 152085609 + ... + 152680855.

Almost surely, 2^{90705661698304} is an apocalyptic number.

90705661698304 is the 9523952-nd square number.

It is an amenable number.

90705661698304 is a deficient number, since it is larger than the sum of its proper divisors (90351646879023).

90705661698304 is an frugal number, since it uses more digits than its factorization.

90705661698304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190510 (or 595249 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 64.

90705661698304 divided by its sum of digits (64) gives a square (1417275964036 = 1190494²).

The spelling of 90705661698304 in words is "ninety trillion, seven hundred five billion, six hundred sixty-one million, six hundred ninety-eight thousand, three hundred four".