77020834 has 16 divisors (see below), whose sum is σ = 126180000. Its totient is φ = 34968960.

The previous prime is 77020831. The next prime is 77020841. The reversal of 77020834 is 43802077.

It is a junction number, because it is equal to n+sod(n) for n = 77020796 and 77020805.

It is not an unprimeable number, because it can be changed into a prime (77020831) 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, 26077 + ... + 28879.

It is an arithmetic number, because the mean of its divisors is an integer number (7886250).

Almost surely, 2^77020834 is an apocalyptic number.

77020834 is a deficient number, since it is larger than the sum of its proper divisors (49159166).

77020834 is a wasteful number, since it uses less digits than its factorization.

77020834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4065.

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 77020834 is about 8776.1514344273. The cubic root of 77020834 is about 425.4704529739.

The spelling of 77020834 in words is "seventy-seven million, twenty thousand, eight hundred thirty-four".