713978 has 4 divisors (see below), whose sum is σ = 1070970. Its totient is φ = 356988.

The previous prime is 713957. The next prime is 713981. The reversal of 713978 is 879317.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 879317 = 439 ⋅2003.

It can be written as a sum of positive squares in only one way, i.e., 644809 + 69169 = 803^2 + 263^2 .

It is an Ulam number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 713978.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178493 + ... + 178496.

2⁷¹³⁹⁷⁸ is an apocalyptic number.

713978 is a deficient number, since it is larger than the sum of its proper divisors (356992).

713978 is a wasteful number, since it uses less digits than its factorization.

713978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356991.

The product of its digits is 10584, while the sum is 35.

The square root of 713978 is about 844.9721888914. The cubic root of 713978 is about 89.3775152111.

The spelling of 713978 in words is "seven hundred thirteen thousand, nine hundred seventy-eight".