764149 has 2 divisors, whose sum is σ = 764150. Its totient is φ = 764148.

The previous prime is 764143. The next prime is 764171. The reversal of 764149 is 941467.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 731025 + 33124 = 855^2 + 182^2 .

It is an emirp because it is prime and its reverse (941467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 764149 - 2⁷ = 764021 is a prime.

764149 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 764149.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382074 + 382075.

It is an arithmetic number, because the mean of its divisors is an integer number (382075).

2⁷⁶⁴¹⁴⁹ is an apocalyptic number.

It is an amenable number.

764149 is a deficient number, since it is larger than the sum of its proper divisors (1).

764149 is an equidigital number, since it uses as much as digits as its factorization.

764149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 31.

The square root of 764149 is about 874.1561645381. The cubic root of 764149 is about 91.4238170658.

It can be divided in two parts, 76 and 4149, that added together give a square (4225 = 65²).

The spelling of 764149 in words is "seven hundred sixty-four thousand, one hundred forty-nine".