77230649 has 8 divisors (see below), whose sum is σ = 81410880. Its totient is φ = 73062000.

The previous prime is 77230631. The next prime is 77230663. The reversal of 77230649 is 94603277.

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 77230649 - 2²⁴ = 60453433 is a prime.

It is a super-2 number, since 2×77230649² = 11929146289922402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (77230679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13124 + ... + 18074.

It is an arithmetic number, because the mean of its divisors is an integer number (10176360).

Almost surely, 2^77230649 is an apocalyptic number.

It is an amenable number.

77230649 is a deficient number, since it is larger than the sum of its proper divisors (4180231).

77230649 is a wasteful number, since it uses less digits than its factorization.

77230649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5791.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 77230649 is about 8788.0970067473. The cubic root of 77230649 is about 425.8564487265.

The spelling of 77230649 in words is "seventy-seven million, two hundred thirty thousand, six hundred forty-nine".