78202965 has 16 divisors (see below), whose sum is σ = 126532800. Its totient is φ = 41238912.

The previous prime is 78202933. The next prime is 78202991. The reversal of 78202965 is 56920287.

It is a happy number.

It is not a de Polignac number, because 78202965 - 2⁵ = 78202933 is a prime.

It is a super-2 number, since 2×78202965² = 12231407469582450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 27955 + ... + 30624.

It is an arithmetic number, because the mean of its divisors is an integer number (7908300).

Almost surely, 2^78202965 is an apocalyptic number.

It is an amenable number.

78202965 is a deficient number, since it is larger than the sum of its proper divisors (48329835).

78202965 is a wasteful number, since it uses less digits than its factorization.

78202965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58676.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 78202965 is about 8843.2440314627. The cubic root of 78202965 is about 427.6361455501.

The spelling of 78202965 in words is "seventy-eight million, two hundred two thousand, nine hundred sixty-five".