70903537 has 2 divisors, whose sum is σ = 70903538. Its totient is φ = 70903536.

The previous prime is 70903529. The next prime is 70903543. The reversal of 70903537 is 73530907.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 3154176 = 8231^2 + 1776^2 .

It is a cyclic number.

It is not a de Polignac number, because 70903537 - 2³ = 70903529 is a prime.

It is a super-2 number, since 2×70903537² = 10054623118220738, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (70903597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35451768 + 35451769.

It is an arithmetic number, because the mean of its divisors is an integer number (35451769).

Almost surely, 2^70903537 is an apocalyptic number.

It is an amenable number.

70903537 is a deficient number, since it is larger than the sum of its proper divisors (1).

70903537 is an equidigital number, since it uses as much as digits as its factorization.

70903537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19845, while the sum is 34.

The square root of 70903537 is about 8420.4238016860. The cubic root of 70903537 is about 413.8941614517.

The spelling of 70903537 in words is "seventy million, nine hundred three thousand, five hundred thirty-seven".