85770388 has 12 divisors (see below), whose sum is σ = 163743552. Its totient is φ = 38986520.

The previous prime is 85770359. The next prime is 85770439. The reversal of 85770388 is 88307758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974620 + ... + 974707.

It is an arithmetic number, because the mean of its divisors is an integer number (13645296).

Almost surely, 2^85770388 is an apocalyptic number.

It is an amenable number.

85770388 is a deficient number, since it is larger than the sum of its proper divisors (77973164).

85770388 is a wasteful number, since it uses less digits than its factorization.

85770388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949342 (or 1949340 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 46.

The square root of 85770388 is about 9261.2303718243. The cubic root of 85770388 is about 441.0073133609.

The spelling of 85770388 in words is "eighty-five million, seven hundred seventy thousand, three hundred eighty-eight".