77025666 has 32 divisors (see below), whose sum is σ = 162339840. Its totient is φ = 24315984.

The previous prime is 77025661. The next prime is 77025701. The reversal of 77025666 is 66652077.

It is not an unprimeable number, because it can be changed into a prime (77025661) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 11505 + ... + 16923.

It is an arithmetic number, because the mean of its divisors is an integer number (5073120).

Almost surely, 2^77025666 is an apocalyptic number.

77025666 is an abundant number, since it is smaller than the sum of its proper divisors (85314174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77025666 is a wasteful number, since it uses less digits than its factorization.

77025666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5550.

The product of its (nonzero) digits is 105840, while the sum is 39.

The square root of 77025666 is about 8776.4267216220. The cubic root of 77025666 is about 425.4793502645.

The spelling of 77025666 in words is "seventy-seven million, twenty-five thousand, six hundred sixty-six".