761563493 has 4 divisors (see below), whose sum is σ = 761774508. Its totient is φ = 761352480.

The previous prime is 761563487. The next prime is 761563499. The reversal of 761563493 is 394365167.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (761563487) and next prime (761563499).

It can be written as a sum of positive squares in 2 ways, for example, as 420127009 + 341436484 = 20497^2 + 18478^2 .

It is a cyclic number.

It is not a de Polignac number, because 761563493 - 2¹⁰ = 761562469 is a prime.

It is a super-2 number, since 2×761563493² = 1159957907740722098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761563499) 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, 99998 + ... + 107343.

It is an arithmetic number, because the mean of its divisors is an integer number (190443627).

Almost surely, 2^761563493 is an apocalyptic number.

It is an amenable number.

761563493 is a deficient number, since it is larger than the sum of its proper divisors (211015).

761563493 is a wasteful number, since it uses less digits than its factorization.

761563493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211014.

The product of its digits is 408240, while the sum is 44.

The square root of 761563493 is about 27596.4398609676. The cubic root of 761563493 is about 913.2058937248.

The spelling of 761563493 in words is "seven hundred sixty-one million, five hundred sixty-three thousand, four hundred ninety-three".