76148681 has 4 divisors (see below), whose sum is σ = 87027072. Its totient is φ = 65270292.

The previous prime is 76148671. The next prime is 76148689. The reversal of 76148681 is 18684167.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18684167 = 787 ⋅23741.

It is a cyclic number.

It is not a de Polignac number, because 76148681 - 2¹⁰ = 76147657 is a prime.

It is a super-2 number, since 2×76148681² = 11597243236079522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76148689) 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, 5439185 + ... + 5439198.

It is an arithmetic number, because the mean of its divisors is an integer number (21756768).

Almost surely, 2^76148681 is an apocalyptic number.

It is an amenable number.

76148681 is a deficient number, since it is larger than the sum of its proper divisors (10878391).

76148681 is a wasteful number, since it uses less digits than its factorization.

76148681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10878390.

The product of its digits is 64512, while the sum is 41.

The square root of 76148681 is about 8726.3211607183. The cubic root of 76148681 is about 423.8584006370.

The spelling of 76148681 in words is "seventy-six million, one hundred forty-eight thousand, six hundred eighty-one".