67900645 has 8 divisors (see below), whose sum is σ = 81653760. Its totient is φ = 54205200.

The previous prime is 67900631. The next prime is 67900667. The reversal of 67900645 is 54600976.

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

It is not a de Polignac number, because 67900645 - 2⁷ = 67900517 is a prime.

It is a super-2 number, since 2×67900645² = 9220995182832050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11781 + ... + 16570.

It is an arithmetic number, because the mean of its divisors is an integer number (10206720).

Almost surely, 2^67900645 is an apocalyptic number.

It is an amenable number.

67900645 is a deficient number, since it is larger than the sum of its proper divisors (13753115).

67900645 is a wasteful number, since it uses less digits than its factorization.

67900645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28835.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 67900645 is about 8240.1847673459. The cubic root of 67900645 is about 407.9666226861.

The spelling of 67900645 in words is "sixty-seven million, nine hundred thousand, six hundred forty-five".