78956745 has 16 divisors (see below), whose sum is σ = 144378240. Its totient is φ = 36094464.

The previous prime is 78956743. The next prime is 78956749. The reversal of 78956745 is 54765987.

It is not a de Polignac number, because 78956745 - 2¹ = 78956743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78956743) 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, 375880 + ... + 376089.

It is an arithmetic number, because the mean of its divisors is an integer number (9023640).

Almost surely, 2^78956745 is an apocalyptic number.

It is an amenable number.

78956745 is a deficient number, since it is larger than the sum of its proper divisors (65421495).

78956745 is a wasteful number, since it uses less digits than its factorization.

78956745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751984.

The product of its digits is 2116800, while the sum is 51.

The square root of 78956745 is about 8885.7608002917. The cubic root of 78956745 is about 429.0057160414.

The spelling of 78956745 in words is "seventy-eight million, nine hundred fifty-six thousand, seven hundred forty-five".