77401066 has 8 divisors (see below), whose sum is σ = 116512704. Its totient is φ = 38563500.

The previous prime is 77401063. The next prime is 77401081. The reversal of 77401066 is 66010477.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (77401061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67810 + ... + 68941.

It is an arithmetic number, because the mean of its divisors is an integer number (14564088).

Almost surely, 2^77401066 is an apocalyptic number.

77401066 is a deficient number, since it is larger than the sum of its proper divisors (39111638).

77401066 is a wasteful number, since it uses less digits than its factorization.

77401066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137036.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 77401066 is about 8797.7875627910. The cubic root of 77401066 is about 426.1694499540.

The spelling of 77401066 in words is "seventy-seven million, four hundred one thousand, sixty-six".