70497997 has 8 divisors (see below), whose sum is σ = 74763000. Its totient is φ = 66246144.

The previous prime is 70497991. The next prime is 70498063. The reversal of 70497997 is 79979407.

It can be written as a sum of positive squares in 4 ways, for example, as 4384836 + 66113161 = 2094^2 + 8131^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70497997 - 2²³ = 62109389 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 (70497991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9129 + ... + 14977.

It is an arithmetic number, because the mean of its divisors is an integer number (9345375).

Almost surely, 2^70497997 is an apocalyptic number.

It is an amenable number.

70497997 is a deficient number, since it is larger than the sum of its proper divisors (4265003).

70497997 is a wasteful number, since it uses less digits than its factorization.

70497997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6575.

The product of its (nonzero) digits is 1000188, while the sum is 52.

The square root of 70497997 is about 8396.3085341119. The cubic root of 70497997 is about 413.1035489330.

The spelling of 70497997 in words is "seventy million, four hundred ninety-seven thousand, nine hundred ninety-seven".