67620407 has 8 divisors (see below), whose sum is σ = 71726976. Its totient is φ = 63528192.

The previous prime is 67620403. The next prime is 67620461. The reversal of 67620407 is 70402676.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 67620407 - 2² = 67620403 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 (67620401) 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, 7043 + ... + 13595.

It is an arithmetic number, because the mean of its divisors is an integer number (8965872).

Almost surely, 2^67620407 is an apocalyptic number.

67620407 is a deficient number, since it is larger than the sum of its proper divisors (4106569).

67620407 is a wasteful number, since it uses less digits than its factorization.

67620407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7177.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 67620407 is about 8223.1628343357. The cubic root of 67620407 is about 407.4045985911.

The spelling of 67620407 in words is "sixty-seven million, six hundred twenty thousand, four hundred seven".