764416481 has 4 divisors (see below), whose sum is σ = 790775700. Its totient is φ = 738057264.

The previous prime is 764416469. The next prime is 764416487. The reversal of 764416481 is 184614467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184614467 = 1549 ⋅119183.

It can be written as a sum of positive squares in 2 ways, for example, as 225480256 + 538936225 = 15016^2 + 23215^2 .

It is a cyclic number.

It is not a de Polignac number, because 764416481 - 2¹⁴ = 764400097 is a prime.

It is a super-2 number, since 2×764416481² = 1168665112848846722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764416487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13179566 + ... + 13179623.

It is an arithmetic number, because the mean of its divisors is an integer number (197693925).

Almost surely, 2^764416481 is an apocalyptic number.

It is an amenable number.

764416481 is a deficient number, since it is larger than the sum of its proper divisors (26359219).

764416481 is a wasteful number, since it uses less digits than its factorization.

764416481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26359218.

The product of its digits is 129024, while the sum is 41.

The square root of 764416481 is about 27648.0827725902. The cubic root of 764416481 is about 914.3448308397.

The spelling of 764416481 in words is "seven hundred sixty-four million, four hundred sixteen thousand, four hundred eighty-one".