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761389 is a prime number
BaseRepresentation
bin10111001111000101101
31102200102121
42321320231
5143331024
624152541
76320536
oct2717055
91380377
10761389
11480052
12308751
13208735
1415b68d
151008e4
hexb9e2d

761389 has 2 divisors, whose sum is σ = 761390. Its totient is φ = 761388.

The previous prime is 761381. The next prime is 761393. The reversal of 761389 is 983167.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756900 + 4489 = 870^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 761389 - 23 = 761381 is a prime.

761389 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (761381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 380694 + 380695.

It is an arithmetic number, because the mean of its divisors is an integer number (380695).

2761389 is an apocalyptic number.

It is an amenable number.

761389 is a deficient number, since it is larger than the sum of its proper divisors (1).

761389 is an equidigital number, since it uses as much as digits as its factorization.

761389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 761389 is about 872.5760711823. The cubic root of 761389 is about 91.3136142391.

The spelling of 761389 in words is "seven hundred sixty-one thousand, three hundred eighty-nine".