70723487 has 2 divisors, whose sum is σ = 70723488. Its totient is φ = 70723486.

The previous prime is 70723441. The next prime is 70723501. The reversal of 70723487 is 78432707.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 70723487 - 2⁸ = 70723231 is a prime.

It is a super-2 number, since 2×70723487² = 10003623226878338, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70723487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70723427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35361743 + 35361744.

It is an arithmetic number, because the mean of its divisors is an integer number (35361744).

Almost surely, 2^70723487 is an apocalyptic number.

70723487 is a deficient number, since it is larger than the sum of its proper divisors (1).

70723487 is an equidigital number, since it uses as much as digits as its factorization.

70723487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 70723487 is about 8409.7257386909. The cubic root of 70723487 is about 413.5435216233.

The spelling of 70723487 in words is "seventy million, seven hundred twenty-three thousand, four hundred eighty-seven".