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64067090 = 25291731277
BaseRepresentation
bin1111010001100…
…1011000010010
311110112221112012
43310121120102
5112400121330
610205102522
71405363343
oct364313022
9143487465
1064067090
113318960a
1219557a42
1310372229
14871a0ca
155957c95
hex3d19612

64067090 has 32 divisors (see below), whose sum is σ = 120080880. Its totient is φ = 24580864.

The previous prime is 64067077. The next prime is 64067093. The reversal of 64067090 is 9076046.

It can be written as a sum of positive squares in 8 ways, for example, as 48011041 + 16056049 = 6929^2 + 4007^2 .

It is not an unprimeable number, because it can be changed into a prime (64067093) 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, 49532 + ... + 50808.

Almost surely, 264067090 is an apocalyptic number.

64067090 is a deficient number, since it is larger than the sum of its proper divisors (56013790).

64067090 is a wasteful number, since it uses less digits than its factorization.

64067090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 64067090 is about 8004.1920266820. The cubic root of 64067090 is about 400.1397220220.

The spelling of 64067090 in words is "sixty-four million, sixty-seven thousand, ninety".

Divisors: 1 2 5 10 29 58 145 173 290 346 865 1277 1730 2554 5017 6385 10034 12770 25085 37033 50170 74066 185165 220921 370330 441842 1104605 2209210 6406709 12813418 32033545 64067090