78662949 has 8 divisors (see below), whose sum is σ = 104929632. Its totient is φ = 52419120.

The previous prime is 78662939. The next prime is 78663017. The reversal of 78662949 is 94926687.

It is a happy number.

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

It is not a de Polignac number, because 78662949 - 2⁴ = 78662933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78662939) 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 7 ways as a sum of consecutive naturals, for example, 5422 + ... + 13664.

It is an arithmetic number, because the mean of its divisors is an integer number (13116204).

Almost surely, 2^78662949 is an apocalyptic number.

It is an amenable number.

78662949 is a deficient number, since it is larger than the sum of its proper divisors (26266683).

78662949 is a wasteful number, since it uses less digits than its factorization.

78662949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11427.

The product of its digits is 1306368, while the sum is 51.

The square root of 78662949 is about 8869.2135502535. The cubic root of 78662949 is about 428.4729483087.

The spelling of 78662949 in words is "seventy-eight million, six hundred sixty-two thousand, nine hundred forty-nine".