Search a number
77077 = 7211213
BaseRepresentation
bin10010110100010101
310220201201
4102310111
54431302
61352501
7440500
oct226425
9126651
1077077
1152a00
1238731
1329110
1420137
1517c87
hex12d15

77077 has 18 divisors (see below), whose sum is σ = 106134. Its totient is φ = 55440.

The previous prime is 77069. The next prime is 77081.

77077 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 53361 + 23716 = 231^2 + 154^2 .

It is not a de Polignac number, because 77077 - 23 = 77069 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77017) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5923 + ... + 5935.

277077 is an apocalyptic number.

77077 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

77077 is a deficient number, since it is larger than the sum of its proper divisors (29057).

77077 is a wasteful number, since it uses less digits than its factorization.

77077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49 (or 31 counting only the distinct ones).

The product of its (nonzero) digits is 2401, while the sum is 28.

The square root of 77077 is about 277.6274482107. The cubic root of 77077 is about 42.5573849963.

The spelling of 77077 in words is "seventy-seven thousand, seventy-seven", and thus it is an iban number.