64622741 has 4 divisors (see below), whose sum is σ = 65842092. Its totient is φ = 63403392.

The previous prime is 64622737. The next prime is 64622771. The reversal of 64622741 is 14722646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26306641 + 38316100 = 5129^2 + 6190^2 .

It is a cyclic number.

It is not a de Polignac number, because 64622741 - 2² = 64622737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64622698 and 64622707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64622771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609596 + ... + 609701.

It is an arithmetic number, because the mean of its divisors is an integer number (16460523).

Almost surely, 2^64622741 is an apocalyptic number.

It is an amenable number.

64622741 is a deficient number, since it is larger than the sum of its proper divisors (1219351).

64622741 is a wasteful number, since it uses less digits than its factorization.

64622741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219350.

The product of its digits is 16128, while the sum is 32.

The square root of 64622741 is about 8038.8270910625. The cubic root of 64622741 is about 401.2931917158.

The spelling of 64622741 in words is "sixty-four million, six hundred twenty-two thousand, seven hundred forty-one".