77210049 has 32 divisors (see below), whose sum is σ = 121245696. Its totient is φ = 42791040.

The previous prime is 77210047. The next prime is 77210051. The reversal of 77210049 is 94001277.

It is an interprime number because it is at equal distance from previous prime (77210047) and next prime (77210051).

It is not a de Polignac number, because 77210049 - 2¹ = 77210047 is a prime.

It is a super-2 number, since 2×77210049² = 11922783333164802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77209998 and 77210025.

It is not an unprimeable number, because it can be changed into a prime (77210047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134934 + ... + 135504.

It is an arithmetic number, because the mean of its divisors is an integer number (3788928).

Almost surely, 2^77210049 is an apocalyptic number.

It is an amenable number.

77210049 is a deficient number, since it is larger than the sum of its proper divisors (44035647).

77210049 is a wasteful number, since it uses less digits than its factorization.

77210049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 77210049 is about 8786.9248887196. The cubic root of 77210049 is about 425.8185819682.

The spelling of 77210049 in words is "seventy-seven million, two hundred ten thousand, forty-nine".