64246477 has 4 divisors (see below), whose sum is σ = 66318976. Its totient is φ = 62173980.

The previous prime is 64246471. The next prime is 64246487. The reversal of 64246477 is 77464246.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77464246 = 2 ⋅38732123.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64246477 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 (64246471) 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, 1036203 + ... + 1036264.

It is an arithmetic number, because the mean of its divisors is an integer number (16579744).

Almost surely, 2^64246477 is an apocalyptic number.

It is an amenable number.

64246477 is a deficient number, since it is larger than the sum of its proper divisors (2072499).

64246477 is a wasteful number, since it uses less digits than its factorization.

64246477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2072498.

The product of its digits is 225792, while the sum is 40.

The square root of 64246477 is about 8015.3900092260. The cubic root of 64246477 is about 400.5128359672.

The spelling of 64246477 in words is "sixty-four million, two hundred forty-six thousand, four hundred seventy-seven".