67764690 has 48 divisors (see below), whose sum is σ = 201359808. Its totient is φ = 15488928.

The previous prime is 67764679. The next prime is 67764701. The reversal of 67764690 is 9646776.

It is an interprime number because it is at equal distance from previous prime (67764679) and next prime (67764701).

It is a super-2 number, since 2×67764690² = 9184106421592200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53152 + ... + 54411.

It is an arithmetic number, because the mean of its divisors is an integer number (4194996).

Almost surely, 2^67764690 is an apocalyptic number.

67764690 is an abundant number, since it is smaller than the sum of its proper divisors (133595118).

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

67764690 is a wasteful number, since it uses less digits than its factorization.

67764690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107583 (or 107580 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 67764690 is about 8231.9311221608. The cubic root of 67764690 is about 407.6941551614.

The spelling of 67764690 in words is "sixty-seven million, seven hundred sixty-four thousand, six hundred ninety".