78466901 has 4 divisors (see below), whose sum is σ = 78628512. Its totient is φ = 78305292.

The previous prime is 78466879. The next prime is 78466919. The reversal of 78466901 is 10966487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 78466901 - 2¹⁴ = 78450517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78466981) 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, 80075 + ... + 81048.

It is an arithmetic number, because the mean of its divisors is an integer number (19657128).

Almost surely, 2^78466901 is an apocalyptic number.

It is an amenable number.

78466901 is a deficient number, since it is larger than the sum of its proper divisors (161611).

78466901 is a wasteful number, since it uses less digits than its factorization.

78466901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161610.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 78466901 is about 8858.1544917663. The cubic root of 78466901 is about 428.1166978055.

The spelling of 78466901 in words is "seventy-eight million, four hundred sixty-six thousand, nine hundred one".