78950775 has 24 divisors (see below), whose sum is σ = 132679504. Its totient is φ = 41414400.

The previous prime is 78950717. The next prime is 78950801. The reversal of 78950775 is 57705987.

It is not a de Polignac number, because 78950775 - 2⁸ = 78950519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4054 + ... + 13203.

Almost surely, 2^78950775 is an apocalyptic number.

78950775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

78950775 is a deficient number, since it is larger than the sum of its proper divisors (53728729).

78950775 is a wasteful number, since it uses less digits than its factorization.

78950775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17331 (or 17326 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 48.

The square root of 78950775 is about 8885.4248632240. The cubic root of 78950775 is about 428.9949032490.

It can be divided in two parts, 789507 and 75, that multiplied together give a square (59213025 = 7695²).

The spelling of 78950775 in words is "seventy-eight million, nine hundred fifty thousand, seven hundred seventy-five".