761940493 has 16 divisors (see below), whose sum is σ = 821337840. Its totient is φ = 704249856.

The previous prime is 761940419. The next prime is 761940533. The reversal of 761940493 is 394049167.

It can be written as a sum of positive squares in 8 ways, for example, as 98465929 + 663474564 = 9923^2 + 25758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-761940493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761940293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317743 + ... + 320131.

It is an arithmetic number, because the mean of its divisors is an integer number (51333615).

Almost surely, 2^761940493 is an apocalyptic number.

761940493 is a gapful number since it is divisible by the number (73) formed by its first and last digit.

It is an amenable number.

761940493 is a deficient number, since it is larger than the sum of its proper divisors (59397347).

761940493 is a wasteful number, since it uses less digits than its factorization.

761940493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2736.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 761940493 is about 27603.2696070592. The cubic root of 761940493 is about 913.3565582594.

The spelling of 761940493 in words is "seven hundred sixty-one million, nine hundred forty thousand, four hundred ninety-three".