764490751 has 2 divisors, whose sum is σ = 764490752. Its totient is φ = 764490750.

The previous prime is 764490689. The next prime is 764490757. The reversal of 764490751 is 157094467.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 764490751 - 2¹⁵ = 764457983 is a prime.

It is a super-2 number, since 2×764490751² = 1168892216729088002, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 764490698 and 764490707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (764490757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 382245375 + 382245376.

It is an arithmetic number, because the mean of its divisors is an integer number (382245376).

Almost surely, 2^764490751 is an apocalyptic number.

764490751 is a deficient number, since it is larger than the sum of its proper divisors (1).

764490751 is an equidigital number, since it uses as much as digits as its factorization.

764490751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 764490751 is about 27649.4258710737. The cubic root of 764490751 is about 914.3744421807.

The spelling of 764490751 in words is "seven hundred sixty-four million, four hundred ninety thousand, seven hundred fifty-one".