78741407 has 4 divisors (see below), whose sum is σ = 79477416. Its totient is φ = 78005400.

The previous prime is 78741401. The next prime is 78741427. The reversal of 78741407 is 70414787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70414787 = 251 ⋅280537.

It is a cyclic number.

It is not a de Polignac number, because 78741407 - 2¹⁰ = 78740383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78741401) 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, 367844 + ... + 368057.

It is an arithmetic number, because the mean of its divisors is an integer number (19869354).

Almost surely, 2^78741407 is an apocalyptic number.

78741407 is a deficient number, since it is larger than the sum of its proper divisors (736009).

78741407 is a wasteful number, since it uses less digits than its factorization.

78741407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736008.

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 78741407 is about 8873.6355007404. The cubic root of 78741407 is about 428.6153531752.

The spelling of 78741407 in words is "seventy-eight million, seven hundred forty-one thousand, four hundred seven".