612700421 has 4 divisors (see below), whose sum is σ = 626949312. Its totient is φ = 598451532.

The previous prime is 612700411. The next prime is 612700423. The reversal of 612700421 is 124007216.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-612700421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612700423) 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, 7124381 + ... + 7124466.

It is an arithmetic number, because the mean of its divisors is an integer number (156737328).

Almost surely, 2^612700421 is an apocalyptic number.

It is an amenable number.

612700421 is a deficient number, since it is larger than the sum of its proper divisors (14248891).

612700421 is a wasteful number, since it uses less digits than its factorization.

612700421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14248890.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 612700421 is about 24752.7861260101. The cubic root of 612700421 is about 849.3422459292.

Adding to 612700421 its reverse (124007216), we get a palindrome (736707637).

The spelling of 612700421 in words is "six hundred twelve million, seven hundred thousand, four hundred twenty-one".