77761070 has 16 divisors (see below), whose sum is σ = 142611840. Its totient is φ = 30517344.

The previous prime is 77761069. The next prime is 77761081. The reversal of 77761070 is 7016777.

It is a self number, because there is not a number n which added to its sum of digits gives 77761070.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72830 + ... + 73889.

It is an arithmetic number, because the mean of its divisors is an integer number (8913240).

Almost surely, 2^77761070 is an apocalyptic number.

77761070 is a deficient number, since it is larger than the sum of its proper divisors (64850770).

77761070 is a wasteful number, since it uses less digits than its factorization.

77761070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146779.

The product of its (nonzero) digits is 14406, while the sum is 35.

The square root of 77761070 is about 8818.2237440428. The cubic root of 77761070 is about 426.8291542849.

The spelling of 77761070 in words is "seventy-seven million, seven hundred sixty-one thousand, seventy".