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57913687 = 138235413
BaseRepresentation
bin1101110011101…
…1000101010111
311000222022122101
43130323011113
5104311214222
65425142531
71302154366
oct334730527
9130868571
1057913687
112a766457
121748aa47
13bcc9470
1479977dd
15513e927
hex373b157

57913687 has 8 divisors (see below), whose sum is σ = 62455904. Its totient is φ = 53383968.

The previous prime is 57913663. The next prime is 57913699. The reversal of 57913687 is 78631975.

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

It is a cyclic number.

It is not a de Polignac number, because 57913687 - 215 = 57880919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57913627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7993 + ... + 13405.

It is an arithmetic number, because the mean of its divisors is an integer number (7806988).

Almost surely, 257913687 is an apocalyptic number.

57913687 is a deficient number, since it is larger than the sum of its proper divisors (4542217).

57913687 is a wasteful number, since it uses less digits than its factorization.

57913687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6249.

The product of its digits is 317520, while the sum is 46.

The square root of 57913687 is about 7610.1042699821. The cubic root of 57913687 is about 386.8955532312.

The spelling of 57913687 in words is "fifty-seven million, nine hundred thirteen thousand, six hundred eighty-seven".

Divisors: 1 13 823 5413 10699 70369 4454899 57913687