76403331 has 24 divisors (see below), whose sum is σ = 115031280. Its totient is φ = 50676192.

The previous prime is 76403329. The next prime is 76403339. The reversal of 76403331 is 13330467.

It is a happy number.

It is not a de Polignac number, because 76403331 - 2¹ = 76403329 is a prime.

It is a super-2 number, since 2×76403331² = 11674937975791122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 76403295 and 76403304.

It is not an unprimeable number, because it can be changed into a prime (76403339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54961 + ... + 56333.

It is an arithmetic number, because the mean of its divisors is an integer number (4792970).

Almost surely, 2^76403331 is an apocalyptic number.

76403331 is a deficient number, since it is larger than the sum of its proper divisors (38627949).

76403331 is a wasteful number, since it uses less digits than its factorization.

76403331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1617 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 27.

The square root of 76403331 is about 8740.8998964638. The cubic root of 76403331 is about 424.3303521185.

Adding to 76403331 its reverse (13330467), we get a palindrome (89733798).

The spelling of 76403331 in words is "seventy-six million, four hundred three thousand, three hundred thirty-one".