761388047 has 4 divisors (see below), whose sum is σ = 870157776. Its totient is φ = 652618320.

The previous prime is 761388041. The next prime is 761388071. The reversal of 761388047 is 740883167.

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

It is a cyclic number.

It is not a de Polignac number, because 761388047 - 2¹⁸ = 761125903 is a prime.

It is a super-2 number, since 2×761388047² = 1159423516228948418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 761387989 and 761388007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761388041) 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, 54384854 + ... + 54384867.

It is an arithmetic number, because the mean of its divisors is an integer number (217539444).

Almost surely, 2^761388047 is an apocalyptic number.

761388047 is a deficient number, since it is larger than the sum of its proper divisors (108769729).

761388047 is a wasteful number, since it uses less digits than its factorization.

761388047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108769728.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 761388047 is about 27593.2608982701. The cubic root of 761388047 is about 913.1357614125.

The spelling of 761388047 in words is "seven hundred sixty-one million, three hundred eighty-eight thousand, forty-seven".