77074649 has 8 divisors (see below), whose sum is σ = 80191488. Its totient is φ = 73997280.

The previous prime is 77074639. The next prime is 77074661. The reversal of 77074649 is 94647077.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77074649 - 2¹⁶ = 77009113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77074639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5852 + ... + 13725.

It is an arithmetic number, because the mean of its divisors is an integer number (10023936).

Almost surely, 2^77074649 is an apocalyptic number.

It is an amenable number.

77074649 is a deficient number, since it is larger than the sum of its proper divisors (3116839).

77074649 is a wasteful number, since it uses less digits than its factorization.

77074649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19735.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 77074649 is about 8779.2168785148. The cubic root of 77074649 is about 425.5695229727.

The spelling of 77074649 in words is "seventy-seven million, seventy-four thousand, six hundred forty-nine".