77374081 has 4 divisors (see below), whose sum is σ = 77417392. Its totient is φ = 77330772.

The previous prime is 77374057. The next prime is 77374091. The reversal of 77374081 is 18047377.

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: 18047377 = 443 ⋅40739.

It is a cyclic number.

It is not a de Polignac number, because 77374081 - 2¹³ = 77365889 is a prime.

It is a super-2 number, since 2×77374081² = 11973496821189122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 77374081.

It is not an unprimeable number, because it can be changed into a prime (77374091) 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, 18855 + ... + 22588.

It is an arithmetic number, because the mean of its divisors is an integer number (19354348).

Almost surely, 2^77374081 is an apocalyptic number.

It is an amenable number.

77374081 is a deficient number, since it is larger than the sum of its proper divisors (43311).

77374081 is a wasteful number, since it uses less digits than its factorization.

77374081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43310.

The product of its (nonzero) digits is 32928, while the sum is 37.

The square root of 77374081 is about 8796.2538048876. The cubic root of 77374081 is about 426.1199178225.

The spelling of 77374081 in words is "seventy-seven million, three hundred seventy-four thousand, eighty-one".