76215149 has 4 divisors (see below), whose sum is σ = 76511964. Its totient is φ = 75918336.

The previous prime is 76215133. The next prime is 76215173. The reversal of 76215149 is 94151267.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68475625 + 7739524 = 8275^2 + 2782^2 .

It is a cyclic number.

It is not a de Polignac number, because 76215149 - 2⁴ = 76215133 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 (76215109) 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, 148022 + ... + 148535.

It is an arithmetic number, because the mean of its divisors is an integer number (19127991).

Almost surely, 2^76215149 is an apocalyptic number.

It is an amenable number.

76215149 is a deficient number, since it is larger than the sum of its proper divisors (296815).

76215149 is a wasteful number, since it uses less digits than its factorization.

76215149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296814.

The product of its digits is 15120, while the sum is 35.

The square root of 76215149 is about 8730.1288077554. The cubic root of 76215149 is about 423.9816893867.

The spelling of 76215149 in words is "seventy-six million, two hundred fifteen thousand, one hundred forty-nine".