78377066 has 8 divisors (see below), whose sum is σ = 118982304. Its totient is φ = 38716300.

The previous prime is 78377029. The next prime is 78377087. The reversal of 78377066 is 66077387.

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

It is a super-2 number, since 2×78377066² = 12285928949536712, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235910 + ... + 236241.

It is an arithmetic number, because the mean of its divisors is an integer number (14872788).

Almost surely, 2^78377066 is an apocalyptic number.

78377066 is a deficient number, since it is larger than the sum of its proper divisors (40605238).

78377066 is a wasteful number, since it uses less digits than its factorization.

78377066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472236.

The product of its (nonzero) digits is 296352, while the sum is 44.

The square root of 78377066 is about 8853.0822881073. The cubic root of 78377066 is about 427.9532550049.

The spelling of 78377066 in words is "seventy-eight million, three hundred seventy-seven thousand, sixty-six".