76214421 has 6 divisors (see below), whose sum is σ = 110087510. Its totient is φ = 50809608.

The previous prime is 76214419. The next prime is 76214431. The reversal of 76214421 is 12441267.

It can be written as a sum of positive squares in only one way, i.e., 76212900 + 1521 = 8730^2 + 39^2 .

It is not a de Polignac number, because 76214421 - 2¹ = 76214419 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 (76214431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4234126 + ... + 4234143.

Almost surely, 2^76214421 is an apocalyptic number.

It is an amenable number.

76214421 is a deficient number, since it is larger than the sum of its proper divisors (33873089).

76214421 is a wasteful number, since it uses less digits than its factorization.

76214421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8468275 (or 8468272 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 76214421 is about 8730.0871129674. The cubic root of 76214421 is about 423.9803394378.

Adding to 76214421 its reverse (12441267), we get a palindrome (88655688).

The spelling of 76214421 in words is "seventy-six million, two hundred fourteen thousand, four hundred twenty-one".