Search a number
-
+
768653901 = 3398328961
BaseRepresentation
bin101101110100001…
…011101001001101
31222120100122221000
4231310023221031
53033233411101
6204134530513
725022310321
oct5564135115
91876318830
10768653901
11364981064
12195506a39
13c33292c2
1474129981
1547734486
hex2dd0ba4d

768653901 has 16 divisors (see below), whose sum is σ = 1139944320. Its totient is φ = 511896960.

The previous prime is 768653891. The next prime is 768653909. The reversal of 768653901 is 109356867.

It is a happy number.

It is not a de Polignac number, because 768653901 - 25 = 768653869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768653909) 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, 12061 + ... + 41021.

It is an arithmetic number, because the mean of its divisors is an integer number (71246520).

Almost surely, 2768653901 is an apocalyptic number.

It is an amenable number.

768653901 is a deficient number, since it is larger than the sum of its proper divisors (371290419).

768653901 is a wasteful number, since it uses less digits than its factorization.

768653901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29953 (or 29947 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 768653901 is about 27724.6082208568. The cubic root of 768653901 is about 916.0312264896.

The spelling of 768653901 in words is "seven hundred sixty-eight million, six hundred fifty-three thousand, nine hundred one".

Divisors: 1 3 9 27 983 2949 8847 26541 28961 86883 260649 781947 28468663 85405989 256217967 768653901