67620740 has 24 divisors (see below), whose sum is σ = 154913472. Its totient is φ = 24589280.

The previous prime is 67620731. The next prime is 67620743. The reversal of 67620740 is 4702676.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 67620697 and 67620706.

It is not an unprimeable number, because it can be changed into a prime (67620743) 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, 153464 + ... + 153903.

It is an arithmetic number, because the mean of its divisors is an integer number (6454728).

Almost surely, 2^67620740 is an apocalyptic number.

It is an amenable number.

67620740 is an abundant number, since it is smaller than the sum of its proper divisors (87292732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67620740 is a wasteful number, since it uses less digits than its factorization.

67620740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307387 (or 307385 counting only the distinct ones).

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

The square root of 67620740 is about 8223.1830819945. The cubic root of 67620740 is about 407.4052673513.

The spelling of 67620740 in words is "sixty-seven million, six hundred twenty thousand, seven hundred forty".