64267690 has 16 divisors (see below), whose sum is σ = 121770720. Its totient is φ = 24354000.

The previous prime is 64267669. The next prime is 64267699. The reversal of 64267690 is 9676246.

It is a super-2 number, since 2×64267690² = 8260671955872200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64267699) 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, 168936 + ... + 169315.

It is an arithmetic number, because the mean of its divisors is an integer number (7610670).

Almost surely, 2^64267690 is an apocalyptic number.

64267690 is a deficient number, since it is larger than the sum of its proper divisors (57503030).

64267690 is a wasteful number, since it uses less digits than its factorization.

64267690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338277.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 64267690 is about 8016.7131668783. The cubic root of 64267690 is about 400.5569117634.

The spelling of 64267690 in words is "sixty-four million, two hundred sixty-seven thousand, six hundred ninety".