78954667 has 4 divisors (see below), whose sum is σ = 86132376. Its totient is φ = 71776960.

The previous prime is 78954611. The next prime is 78954677. The reversal of 78954667 is 76645987.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78954667 - 2²³ = 70566059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78954677) 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, 3588838 + ... + 3588859.

It is an arithmetic number, because the mean of its divisors is an integer number (21533094).

Almost surely, 2^78954667 is an apocalyptic number.

78954667 is a deficient number, since it is larger than the sum of its proper divisors (7177709).

78954667 is a wasteful number, since it uses less digits than its factorization.

78954667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177708.

The product of its digits is 2540160, while the sum is 52.

The square root of 78954667 is about 8885.6438708740. The cubic root of 78954667 is about 429.0019524546.

The spelling of 78954667 in words is "seventy-eight million, nine hundred fifty-four thousand, six hundred sixty-seven".