67913497 has 4 divisors (see below), whose sum is σ = 68676660. Its totient is φ = 67150336.

The previous prime is 67913479. The next prime is 67913509. The reversal of 67913497 is 79431976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19527561 + 48385936 = 4419^2 + 6956^2 .

It is a cyclic number.

It is not a de Polignac number, because 67913497 - 2⁷ = 67913369 is a prime.

It is a super-2 number, since 2×67913497² = 9224486149538018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67913407) 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, 381448 + ... + 381625.

It is an arithmetic number, because the mean of its divisors is an integer number (17169165).

Almost surely, 2^67913497 is an apocalyptic number.

It is an amenable number.

67913497 is a deficient number, since it is larger than the sum of its proper divisors (763163).

67913497 is an equidigital number, since it uses as much as digits as its factorization.

67913497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763162.

The product of its digits is 285768, while the sum is 46.

The square root of 67913497 is about 8240.9645673307. The cubic root of 67913497 is about 407.9923605676.

The spelling of 67913497 in words is "sixty-seven million, nine hundred thirteen thousand, four hundred ninety-seven".