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868087407 = 31169138069
BaseRepresentation
bin110011101111011…
…111011001101111
32020111110102001110
4303233133121233
53234212244112
6222050043103
730340423035
oct6357373157
92214412043
10868087407
11406015a10
12202879493
1310ab01cb5
1483410555
155132613c
hex33bdf66f

868087407 has 16 divisors (see below), whose sum is σ = 1264533120. Its totient is φ = 525338400.

The previous prime is 868087391. The next prime is 868087411. The reversal of 868087407 is 704780868.

It is not a de Polignac number, because 868087407 - 24 = 868087391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868087417) 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, 3769 + ... + 41837.

It is an arithmetic number, because the mean of its divisors is an integer number (79033320).

Almost surely, 2868087407 is an apocalyptic number.

868087407 is a deficient number, since it is larger than the sum of its proper divisors (396445713).

868087407 is a wasteful number, since it uses less digits than its factorization.

868087407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38774.

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 868087407 is about 29463.3230814177. The cubic root of 868087407 is about 953.9402027751.

The spelling of 868087407 in words is "eight hundred sixty-eight million, eighty-seven thousand, four hundred seven".

Divisors: 1 3 11 33 691 2073 7601 22803 38069 114207 418759 1256277 26305679 78917037 289362469 868087407