78054641 has 16 divisors (see below), whose sum is σ = 94166400. Its totient is φ = 63203328.

The previous prime is 78054629. The next prime is 78054643. The reversal of 78054641 is 14645087.

It is a cyclic number.

It is not a de Polignac number, because 78054641 - 2¹⁰ = 78053617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78054643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67121 + ... + 68273.

It is an arithmetic number, because the mean of its divisors is an integer number (5885400).

Almost surely, 2^78054641 is an apocalyptic number.

It is an amenable number.

78054641 is a deficient number, since it is larger than the sum of its proper divisors (16111759).

78054641 is a wasteful number, since it uses less digits than its factorization.

78054641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 78054641 is about 8834.8537622306. The cubic root of 78054641 is about 427.3656151137.

The spelling of 78054641 in words is "seventy-eight million, fifty-four thousand, six hundred forty-one".